Factors of 18 are the list of integers that can be evenly split into 18. It has actually a total of 6 components of i beg your pardon 18 is the biggest factor and also the positive components of 18 are 1, 2, 3, 6, 9, and 18. The Pair determinants of 18 space (1, 18), (2, 9), and also (3, 6) and its Prime determinants are 1, 2, 3, 6, 9, 18.

You are watching: What are the prime factors of 18

Factors that 18: 1, 2, 3, 6, 9 and 18Negative components of 18: -1, -2, -3, -6, -9 and also -18Prime components of 18: 2, 3Prime administer of 18: 2 × 3 × 3 = 2 × 32Sum of components of 18: 39

Let us explore an ext about factors of 18 and ways to find them.

 1 What space the factors of 18? 2 How come Calculate determinants of 18? 3 Factors the 18 in Pairs 4 Important Notes 5 FAQs on determinants of 18

## What room the determinants of 18?

Factors the a number are the numbers that division the offered number precisely without any type of remainder. Follow to the meaning of factors, the determinants of 18 are 1, 2, 3, 6, 9, and 18. So,18 is a composite number as it has more factors various other than 1 and itself.

## How to Calculate components of 18?

We deserve to use different methods choose the divisibility test, element factorization, and the upside-down department method to calculation the determinants of 18. In element factorization, us express 18 as a product the its element factors, and also in the division method, we view which numbers divide 18 exactly without a remainder.

Let us calculate factors of 18 utilizing the complying with two methods:

Factors that 18 by element factorization factor tree methodFactors the 18 by upside-down department method

### Prime administrate By Upside-Down department Method

Prime administer is expressing a number as a product the its element factors.For example, factors of 6 are 1, 2, 3, 66 = 2 × 3So, the prime components of 6 space 2 and also 3.

The upside-down division got that name due to the fact that the division symbol is flipped upside down.

STEP 1: By utilizing divisibility rules, we find out the smallest exact prime divisor (factor) the the provided number. Here, 18 is an even number. So that is divisible by 2. In various other words, 2 divides 18 v no remainder. Therefore, 2 is the the smallest prime factor of 18.STEP 2: We divide the offered number by its smallest element other than 1 (prime factor), 18 ÷ 2 = 93 is the quotient, for this reason we prevent the process here. Therefore, 18 = 2 × 3 × 3 ### Prime administer by element Tree Method

First, we identify the 2 factors that give 18. 18 is the source of this element tree.18 = × 6Here, 6 is a composite number. For this reason it deserve to be additional factorized.6 = 3 × 2We proceed this procedure until we space left with just prime numbers, i.e., till we cannot further aspect the obtained numbers.We then circle every the element numbers in the aspect tree. Basically, us branch out 18 right into its prime factors. So, the prime factorization of 18 is 18= 2 × 3 × 3.

A aspect tree is not distinctive for a given number. Instead of to express 18 as 2 × 9, we deserve to express 18 as 3 × 6. Right here is a an easy activity to shot on your own. Rather of 2 × 9, if I had used 3 × 6, carry out you think us would get the exact same factors?Can you attract the variable tree through 3 and 6 as the branches?

Explore components using illustrations and also interactive examples

Factor pairs space the two numbers that, when multiplied, give the number 18.

18 = 1 × 1818 = 2 × 918 = 3 × 6

Therefore, pair components of 18 are (1,18), (2,9), and (3,6). A element rainbow help you find every one of the factors. The is referred to as a rainbow because all of the element pairs affix to make a rainbow! Making a factor rainbow is rather easy.

Let’s shot one:Find every one of the determinants for the number 18.

Step I: begin with 1 and the number itself.Step II: counting up by ones to check out if you can multiply 2 numbers together to get your target number.Step III: Stop as soon as you can’t gain any more numbers in between.Step IV: attach the aspect pairs. In total, we have 3 factor pairs, i.e., there room 6 factors of 18: 1, 2, 3, 6, 9, 18.

We can have an adverse factors additionally for a provided number.For example: Since the product the two an unfavorable numbers is confident <(-) × (-) = +>.(-1,-18) , (-2,-9), and also (-3,-6) are also factor bag of 18.But because that now, permit us focus on the positive components in this article.With factors, us are just looking for entirety numbers that are equal come or much less than the original number.

Important Notes:

Factors that a number are the numbers that divide the provided number precisely without any remainder.18 is a composite number together it has much more factors various other than 1 and itself.Pair determinants of 18 room (1,18), (2,9), and also (3,6).1 is a factor that every number.The factor of a number is always less than or same to the provided number.Prime factorization is to express the number as a product that its element factors.
90 × 0.2= 18. Deserve to we break up (90, 0.2) as a variable pair the 18?Is the number of factors of a provided number finite?Can the factor that a number be better than the number itself?

Example 2: There space 18 people in a room together at a party. Everyone would like to take component in games throughout the party. What could be the feasible sizes of groups we have the right to break the world into so that no one is left out and also everyone have the right to play?

Solution:

To settle this problem, we require to understand the factors of 18.List them out: 1, 2, 3, 6, 9, 18.Let"s see how the variable pairs can assist us.Factor pairs: (1,18), (2,9), (3,6)

The first pair, 1 and 18, doesn"t tell us much. That just means that we could have 1 team of 18.

The 2nd pair tells united state we could have 2 teams of 9 or 9 groups that 2.

The third pair tells united state we could have 3 groups of 6 or 6 groups that 3.

Now we can see that there are three possible combinations for group the party guests: (1,18), (2,9), (3,6).

Example 3: Xin has actually a plot that land v an area that 18 sq. Ft. He wants to rest this plot of soil into various equal-sized part to plant various vegetables. In just how many can he divide the plot?

Solution:

The area of the rectangle is length × breadth.Given area = 18 square feetSo, the feasible length and breadth are the variable pairs (as the product of this pairs is 18).

 Length Breadth 1 18 2 9 3 6

There room 3 possible ways. We can swap the size of length and breadth according to the situation. ## FAQs on components of 18

### What room the factors of 18?

The factors of 18 are 1, 2, 3, 6, 9, 18 and also its an unfavorable factors space -1, -2, -3, -6, -9, -18.

### What is the Greatest common Factor of 18 and 13?

The factors of 18 space 1, 2, 3, 6, 9, 18 and the determinants of 13 space 1, 13. 18 and also 13 have only one common factor which is 1. This implies that 18 and 13 are co-prime.Hence, the Greatest typical Factor (GCF) that 18 and 13 is 1.

See more: How Do You Unlock Expert Ghosts In Mario Kart Wii /Time Trial And Ghosts

### What are the usual Factors of 18 and also 7?

Since the determinants of 18 room 1, 2, 3, 6, 9, 18, and also factors that 7 room 1, 7. Hence, 18 and also 7 have only one usual factor i beg your pardon is 1. Therefore, 18 and 7 room co-prime.

### What is the amount of the components of 18?

All the factors of 18 room 1, 2, 3, 6, 9, 18 and therefore the amount of every these determinants is 1 + 2 + 3 + 6 + 9 + 18 = 39