Factors of 1818
The factors of 1818 are 1, 2, 3, 6, 9, 18, 101, 202, 303, 606, 909, 1818. It has 12 factors.
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 1818 is a whole number that divides it with nothing left over. You only need to test the numbers up to √1818 ≈ 42.64; 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 + 3 + 6 + 9 + 18 + 101 + 202 + 303 + 606 + 909 + 1818 = 3978. Without 1818 itself that is 2160, so 1818 is an abundant number.
LaTeX source of the formulas on this page
\[ 1818 = 2 \times 3^{2} \times 101 \]Factor pairs of 1818
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 1818 | 1 × 1818 = 1818 |
| 2 | 909 | 2 × 909 = 1818 |
| 3 | 606 | 3 × 606 = 1818 |
| 6 | 303 | 6 × 303 = 1818 |
| 9 | 202 | 9 × 202 = 1818 |
| 18 | 101 | 18 × 101 = 1818 |
Questions
What are the factors of 1818?
The factors of 1818 are 1, 2, 3, 6, 9, 18, 101, 202, 303, 606, 909, 1818. It has 12 factors.
What are the prime factors of 1818?
2, 3, 101. As a product: 2 × × 101.
How many factors does 1818 have?
1818 has 12 factors (6 factor pairs).
What is the sum of the factors of 1818?
3978.
Is 1818 a prime number?
No. It is divisible by 2, so 1818 = 2 × 909.