# Prime factorization of 18

Here you will see step by step solution of prime factorization of 18, how to find factors of 18, you will see all factors of 18, how many factors of 18 has? Factors of 18 are 1, 2, 3, 6, 9, 18, we can see that 18 has 6 factor and sum of all factors is 39.

• All Factors of 18: 1, 2, 3, 6, 9, 18
• Prime Factors of 18: 2 × 3 × 3
• Prime Factorization of 18: 21 × 32
• Sum of Factors of 18: 39
• Is 18 prime number: No

### How to find factors of 18 by Division Method?

To find the factors of 18 by division method, we need the find the all numbers between 1 to 18, which divide 18 with 0 remainder, then the number is factor of 18.

### Pair factors of 18

• 18/1 = 18 [ 1 × 18 (1, 18) 1 and 18 is pair factor of 18]
• 18/2 = 9 [ 2 × 9 (2, 9) 2 and 9 is pair factor of 18]
• 18/3 = 6 [ 3 × 6 (3, 6) 3 and 6 is pair factor of 18]
• 18/6 = 3 [ 6 × 3 (6, 3) 6 and 3 is pair factor of 18]
• 18/9 = 2 [ 9 × 2 (9, 2) 9 and 2 is pair factor of 18]
• 18/18 = 1 [ 18 × 1 (18, 1) 18 and 1 is pair factor of 18]

As we checked numbers between 1 to 18 that are not leaving any remainder, hence we can say factors of 18 is 1, 2, 3, 6, 9, 18.

Also note that, in exponential form prime factorization of 18 is written as 21 × 32 and it is a composite number.

#### Prime Factorization Calculator

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