Factors of 770
The factors of 770 are 1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770. It has 16 factors.
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 770 is a whole number that divides it with nothing left over. You only need to test the numbers up to √770 ≈ 27.75; 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 1728. Without 770 itself that is 958, so 770 is an abundant number.
LaTeX source of the formulas on this page
\[ 770 = 2 \times 5 \times 7 \times 11 \]
Factor pairs of 770
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 770 | 1 × 770 = 770 |
| 2 | 385 | 2 × 385 = 770 |
| 5 | 154 | 5 × 154 = 770 |
| 7 | 110 | 7 × 110 = 770 |
| 10 | 77 | 10 × 77 = 770 |
| 11 | 70 | 11 × 70 = 770 |
| 14 | 55 | 14 × 55 = 770 |
| 22 | 35 | 22 × 35 = 770 |
Questions
What are the factors of 770?
The factors of 770 are 1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770. It has 16 factors.
What are the prime factors of 770?
2, 5, 7, 11. As a product: 2 × 5 × 7 × 11.
How many factors does 770 have?
770 has 16 factors (8 factor pairs).
What is the sum of the factors of 770?
1728.
Is 770 a prime number?
No. It is divisible by 2, so 770 = 2 × 385.