Factors of 45
Answer
Factors: 1, 3, 5, 9, 15, 45
Number of factors: 6
Factor pairs: (1, 45), (3, 15), (5, 9)
Prime Factorization
45 = 32 × 5
Properties
- This number is not prime
- This number is not a perfect square
- This is an odd number
- Sum of all factors: 78
Check Numbers from 1 to 45
Try Other Numbers
Calculator
Want to find factors of a different number? Use our calculator:
Understanding the Factors of 45
When we look at the number 45, we find that it has 6 factors in total. These are the numbers that divide evenly into 45 with no remainder.
This number is composite, meaning it has more than two factors. It can be written as the product of its prime factors: 32 × 5.
Factor Pairs
The factors of 45 can be arranged in pairs: (1, 45), (3, 15), (5, 9). Each pair multiplies to give 45.