Factors of 31
The factors of 31 are 1, 31. It has 2 factors.
Factors of 31
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 31 is a whole number that divides it with nothing left over. You only need to test the numbers up to √31 ≈ 5.57; every one that divides gives a pair.
- 2
The factor pairs are listed in the table below. Together they give 2 factors.
- 3
31 has no factors besides 1 and itself, so it is a prime number.
- 4
Add all the factors: 1 + 31 = 32. Without 31 itself that is 1, so 31 is a deficient number.
LaTeX source of the formulas on this page
\[ 31 = 31 \]
Factor pairs of 31
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 31 | 1 × 31 = 31 |
Questions
What are the factors of 31?
The factors of 31 are 1, 31. It has 2 factors.
What are the prime factors of 31?
31. As a product: 31.
How many factors does 31 have?
31 has 2 factors (1 factor pair).
What is the sum of the factors of 31?
32.
Is 31 a prime number?
Yes. Its only factors are 1 and 31.