Factors of 40
40 has 8 factors.
All factors of 40
1, 2, 4, 5, 8, 10, 20, 40
Prime factorization: 2³ × 5
Number of factors
8
Sum of factors
90
Prime?
No
Factor pairs of 40
Each pair multiplies together to make 40:
| Pair | Product |
|---|---|
| 1 × 40 | 40 |
| 2 × 20 | 40 |
| 4 × 10 | 40 |
| 5 × 8 | 40 |
Factors of nearby numbers
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Frequently asked questions
What are the factors of 40?+
The factors of 40 are 1, 2, 4, 5, 8, 10, 20, 40 — that is 8 factors in total.
What is the prime factorization of 40?+
The prime factorization of 40 is 2³ × 5.
Is 40 a prime number?+
No. 40 has 8 factors, more than just 1 and itself, so it is a composite number.