Factors of 1040
The factors of 1040 are 1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040. It has 20 factors.
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 1040 is a whole number that divides it with nothing left over. You only need to test the numbers up to √1040 ≈ 32.25; 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 2604. Without 1040 itself that is 1564, so 1040 is an abundant number.
LaTeX source of the formulas on this page
\[ 1040 = 2^{4} \times 5 \times 13 \]Factor pairs of 1040
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 1040 | 1 × 1040 = 1040 |
| 2 | 520 | 2 × 520 = 1040 |
| 4 | 260 | 4 × 260 = 1040 |
| 5 | 208 | 5 × 208 = 1040 |
| 8 | 130 | 8 × 130 = 1040 |
| 10 | 104 | 10 × 104 = 1040 |
| 13 | 80 | 13 × 80 = 1040 |
| 16 | 65 | 16 × 65 = 1040 |
| 20 | 52 | 20 × 52 = 1040 |
| 26 | 40 | 26 × 40 = 1040 |
Questions
What are the factors of 1040?
The factors of 1040 are 1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040. It has 20 factors.
What are the prime factors of 1040?
2, 5, 13. As a product: × 5 × 13.
How many factors does 1040 have?
1040 has 20 factors (10 factor pairs).
What is the sum of the factors of 1040?
2604.
Is 1040 a prime number?
No. It is divisible by 2, so 1040 = 2 × 520.