Factors of 620
The factors of 620 are 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620. It has 12 factors.
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 620 is a whole number that divides it with nothing left over. You only need to test the numbers up to √620 ≈ 24.90; every one that divides gives a pair.
- 2
The factor pairs are listed in the table below. Together they give 12 factors.
- 3
Prime factorisation: keep dividing by the smallest prime that fits.
- 4
Add all the factors: 1 + 2 + 4 + 5 + 10 + 20 + 31 + 62 + 124 + 155 + 310 + 620 = 1344. Without 620 itself that is 724, so 620 is an abundant number.
LaTeX source of the formulas on this page
\[ 620 = 2^{2} \times 5 \times 31 \]Factor pairs of 620
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 620 | 1 × 620 = 620 |
| 2 | 310 | 2 × 310 = 620 |
| 4 | 155 | 4 × 155 = 620 |
| 5 | 124 | 5 × 124 = 620 |
| 10 | 62 | 10 × 62 = 620 |
| 20 | 31 | 20 × 31 = 620 |
Questions
What are the factors of 620?
The factors of 620 are 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620. It has 12 factors.
What are the prime factors of 620?
2, 5, 31. As a product: × 5 × 31.
How many factors does 620 have?
620 has 12 factors (6 factor pairs).
What is the sum of the factors of 620?
1344.
Is 620 a prime number?
No. It is divisible by 2, so 620 = 2 × 310.