Factors of 28
28 has 6 factors.
All factors of 28
1, 2, 4, 7, 14, 28
Prime factorization: 2² × 7
Number of factors
6
Sum of factors
56
Prime?
No
Factor pairs of 28
Each pair multiplies together to make 28:
| Pair | Product |
|---|---|
| 1 × 28 | 28 |
| 2 × 14 | 28 |
| 4 × 7 | 28 |
Factors of nearby numbers
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Frequently asked questions
What are the factors of 28?+
The factors of 28 are 1, 2, 4, 7, 14, 28 — that is 6 factors in total.
What is the prime factorization of 28?+
The prime factorization of 28 is 2² × 7.
Is 28 a prime number?+
No. 28 has 6 factors, more than just 1 and itself, so it is a composite number.