Factors of 45 (Definition, List, Prime Factorization & Examples)

Last updated:  Dec 2025

The factors of 45 are numbers that divide 45 exactly without leaving any remainder. These factors are useful in solving arithmetic problems and understanding number properties.

Factors of 45 – Definition, List, Prime Factorization & Examples

What Are the Factors of 45?

Any number that divides 45 completely is called a factor of 45.

List of Factors of 45

1, 3, 5, 9, 15, 45

How to Find the Factors of 45

Factor Pair Method

  • 1 × 45
  • 3 × 15
  • 5 × 9

Prime Factorization of 45

45 = 3 × 3 × 5 = 3² × 5

Is 45 a Prime or Composite Number?

45 is a composite number.

Frequently Asked Questions

How many factors does 45 have?

45 has 6 factors.

Is 45 an odd number?

Yes, 45 is an odd number.

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