Factors of 100
100 has 9 factors.
All factors of 100
1, 2, 4, 5, 10, 20, 25, 50, 100
Prime factorization: 2² × 5²
Number of factors
9
Sum of factors
217
Prime?
No
Factor pairs of 100
Each pair multiplies together to make 100:
| Pair | Product |
|---|---|
| 1 × 100 | 100 |
| 2 × 50 | 100 |
| 4 × 25 | 100 |
| 5 × 20 | 100 |
| 10 × 10 | 100 |
Factors of nearby numbers
Factor any number
Need a different number? The prime factorization calculator breaks any number into its prime factors and lists all its divisors.
Frequently asked questions
What are the factors of 100?+
The factors of 100 are 1, 2, 4, 5, 10, 20, 25, 50, 100 — that is 9 factors in total.
What is the prime factorization of 100?+
The prime factorization of 100 is 2² × 5².
Is 100 a prime number?+
No. 100 has 9 factors, more than just 1 and itself, so it is a composite number.