Factors of 8720
The factors of 8720 are 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720. It has 20 factors.
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 8720 is a whole number that divides it with nothing left over. You only need to test the numbers up to √8720 ≈ 93.38; every one that divides gives a pair.
- 2
The factor pairs are listed in the table below. Together they give 20 factors.
- 3
Prime factorisation: keep dividing by the smallest prime that fits.
- 4
Add all the factors: the sum is 20460. Without 8720 itself that is 11740, so 8720 is an abundant number.
LaTeX source of the formulas on this page
\[ 8720 = 2^{4} \times 5 \times 109 \]Factor pairs of 8720
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 8720 | 1 × 8720 = 8720 |
| 2 | 4360 | 2 × 4360 = 8720 |
| 4 | 2180 | 4 × 2180 = 8720 |
| 5 | 1744 | 5 × 1744 = 8720 |
| 8 | 1090 | 8 × 1090 = 8720 |
| 10 | 872 | 10 × 872 = 8720 |
| 16 | 545 | 16 × 545 = 8720 |
| 20 | 436 | 20 × 436 = 8720 |
| 40 | 218 | 40 × 218 = 8720 |
| 80 | 109 | 80 × 109 = 8720 |
Questions
What are the factors of 8720?
The factors of 8720 are 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720. It has 20 factors.
What are the prime factors of 8720?
2, 5, 109. As a product: × 5 × 109.
How many factors does 8720 have?
8720 has 20 factors (10 factor pairs).
What is the sum of the factors of 8720?
20460.
Is 8720 a prime number?
No. It is divisible by 2, so 8720 = 2 × 4360.