Factors of 842

The factors of 842 are 1, 2, 421, 842. It has 4 factors.

Factors of 842

Pick any whole number from 1 to 10,000.

842 = 2 \times 421

How to work it out

1
A factor of 842 is a whole number that divides it with nothing left over. You only need to test the numbers up to √842 ≈ 29.02; every one that divides gives a pair.
2
The factor pairs are listed in the table below. Together they give 4 factors.
3
Prime factorisation: keep dividing by the smallest prime that fits.
$842 = 2 \times 421$
4
Add all the factors: 1 + 2 + 421 + 842 = 1266. Without 842 itself that is 424, so 842 is a deficient number.

LaTeX source of the formulas on this page

\[ 842 = 2 \times 421 \]

Factor	Pairs with	Product
1	842	1 × 842 = 842
2	421	2 × 421 = 842

What are the factors of 842?

The factors of 842 are 1, 2, 421, 842. It has 4 factors.

What are the prime factors of 842?

2, 421. As a product: 2 × 421.

How many factors does 842 have?

842 has 4 factors (2 factor pairs).

What is the sum of the factors of 842?

1266.

Is 842 a prime number?

No. It is divisible by 2, so 842 = 2 × 421.