Factors of 31

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What are the Factors of 31?

Answer

Factors of 31:

1, 31

2 factors — 1 and 31 · prime number

Underlined — prime: 31 · 1 — neither prime nor composite

Factor pairs of 31

1 pair: 1 × 31

Up to √31 ≈ 5.57 no number from 2 to 5 divides 31 — there are no other pairs.

Related Calculations

See Also

Prime Number Checker - Find out whether a given number is Prime or not
Prime Factorization - Prime Factorization Calculator
Prime Numbers List - List of all Prime Numbers - how many Prime numbers are between

Recalculate with different values ↑

Factors Table

Number	Factors
16	1, 2, 4, 8, 16
17	1, 17
18	1, 2, 3, 6, 9, 18
19	1, 19
20	1, 2, 4, 5, 10, 20
21	1, 3, 7, 21
22	1, 2, 11, 22
23	1, 23
24	1, 2, 3, 4, 6, 8, 12, 24
25	1, 5, 25
26	1, 2, 13, 26
27	1, 3, 9, 27
28	1, 2, 4, 7, 14, 28
29	1, 29
30	1, 2, 3, 5, 6, 10, 15, 30
31	1, 31
32	1, 2, 4, 8, 16, 32
33	1, 3, 11, 33
34	1, 2, 17, 34
35	1, 5, 7, 35
36	1, 2, 3, 4, 6, 9, 12, 18, 36
37	1, 37
38	1, 2, 19, 38
39	1, 3, 13, 39
40	1, 2, 4, 5, 8, 10, 20, 40
41	1, 41
42	1, 2, 3, 6, 7, 14, 21, 42
43	1, 43
44	1, 2, 4, 11, 22, 44
45	1, 3, 5, 9, 15, 45

FAQ

What are the Factors of 31?

Factors of 31: 1, 31

How many factors does 31 have?

Number 31 has 2 factors

How many Factor Pairs does 31 have?

Number 31 has 1 factor pair

Is 31 a prime or composite number?

Prime: its only factors are 1 and 31 — no prime up to √31 ≈ 5.57 divides it.