Factors of 2840
The factors of 2840 are 1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840. It has 16 factors.
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 2840 is a whole number that divides it with nothing left over. You only need to test the numbers up to √2840 ≈ 53.29; every one that divides gives a pair.
- 2
The factor pairs are listed in the table below. Together they give 16 factors.
- 3
Prime factorisation: keep dividing by the smallest prime that fits.
- 4
Add all the factors: the sum is 6480. Without 2840 itself that is 3640, so 2840 is an abundant number.
LaTeX source of the formulas on this page
\[ 2840 = 2^{3} \times 5 \times 71 \]Factor pairs of 2840
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 2840 | 1 × 2840 = 2840 |
| 2 | 1420 | 2 × 1420 = 2840 |
| 4 | 710 | 4 × 710 = 2840 |
| 5 | 568 | 5 × 568 = 2840 |
| 8 | 355 | 8 × 355 = 2840 |
| 10 | 284 | 10 × 284 = 2840 |
| 20 | 142 | 20 × 142 = 2840 |
| 40 | 71 | 40 × 71 = 2840 |
Questions
What are the factors of 2840?
The factors of 2840 are 1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840. It has 16 factors.
What are the prime factors of 2840?
2, 5, 71. As a product: × 5 × 71.
How many factors does 2840 have?
2840 has 16 factors (8 factor pairs).
What is the sum of the factors of 2840?
6480.
Is 2840 a prime number?
No. It is divisible by 2, so 2840 = 2 × 1420.