Factors of 981

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What are the factors of 981?

Answer

Factors of 981:

1, 3, 9, 109, 327, 981

6 factors · 981 = 3² × 109 · composite

Underlined — prime: 3, 109 · 1 — neither prime nor composite · others — composite

Factor pairs of 981

3 pairs: 1 × 981 · 3 × 327 · 9 × 109

Past √981 ≈ 31.32 every pair would repeat one already found — so checking stops at 31.

981 = 3² × 109 → (2 + 1) × (1 + 1) = 6 factors: add 1 to each exponent and multiply.

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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

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Factors Table

Number	Factors
966	1, 2, 3, 6, 7, 14, 21, 23, 42, 46, 69, 138, 161, 322, 483, 966
967	1, 967
968	1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 484, 968
969	1, 3, 17, 19, 51, 57, 323, 969
970	1, 2, 5, 10, 97, 194, 485, 970
971	1, 971
972	1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 972
973	1, 7, 139, 973
974	1, 2, 487, 974
975	1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975
976	1, 2, 4, 8, 16, 61, 122, 244, 488, 976
977	1, 977
978	1, 2, 3, 6, 163, 326, 489, 978
979	1, 11, 89, 979
980	1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980
981	1, 3, 9, 109, 327, 981
982	1, 2, 491, 982
983	1, 983
984	1, 2, 3, 4, 6, 8, 12, 24, 41, 82, 123, 164, 246, 328, 492, 984
985	1, 5, 197, 985
986	1, 2, 17, 29, 34, 58, 493, 986
987	1, 3, 7, 21, 47, 141, 329, 987
988	1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988
989	1, 23, 43, 989
990	1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990
991	1, 991
992	1, 2, 4, 8, 16, 31, 32, 62, 124, 248, 496, 992
993	1, 3, 331, 993
994	1, 2, 7, 14, 71, 142, 497, 994
995	1, 5, 199, 995

FAQ

What are the factors of 981?

Factors of 981: 1, 3, 9, 109, 327, 981

How many factors does 981 have?

Number 981 has 6 factors

How many factor pairs does 981 have?

Number 981 has 3 factor pairs

Is 981 a prime or composite number?

Composite: 981 = 3² × 109, so it has 6 factors — a prime has exactly two.

How many factors does 981 have excluding 1 and 981?

4: 3, 9, 109 and 327.