Factors of 20
20 has 6 factors.
All factors of 20
1, 2, 4, 5, 10, 20
Prime factorization: 2² × 5
Number of factors
6
Sum of factors
42
Prime?
No
Factor pairs of 20
Each pair multiplies together to make 20:
| Pair | Product |
|---|---|
| 1 × 20 | 20 |
| 2 × 10 | 20 |
| 4 × 5 | 20 |
Factors of nearby numbers
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Frequently asked questions
What are the factors of 20?+
The factors of 20 are 1, 2, 4, 5, 10, 20 — that is 6 factors in total.
What is the prime factorization of 20?+
The prime factorization of 20 is 2² × 5.
Is 20 a prime number?+
No. 20 has 6 factors, more than just 1 and itself, so it is a composite number.