Factors of 855

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What are the factors of 855?

Answer

Factors of 855:

1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855

12 factors · 855 = 3² × 5 × 19 · composite

Underlined — prime: 3, 5, 19 · 1 — neither prime nor composite · others — composite

Factor pairs of 855

1 × 855
3 × 285
5 × 171
9 × 95
15 × 57
19 × 45

√855 ≈ 29.24 — the last pair 19 × 45 sits here; past it pairs repeat.

855 = 3² × 5 × 19 → (2 + 1) × (1 + 1) × (1 + 1) = 12 factors: add 1 to each exponent and multiply.

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

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Factors Table

Number	Factors
840	1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
841	1, 29, 841
842	1, 2, 421, 842
843	1, 3, 281, 843
844	1, 2, 4, 211, 422, 844
845	1, 5, 13, 65, 169, 845
846	1, 2, 3, 6, 9, 18, 47, 94, 141, 282, 423, 846
847	1, 7, 11, 77, 121, 847
848	1, 2, 4, 8, 16, 53, 106, 212, 424, 848
849	1, 3, 283, 849
850	1, 2, 5, 10, 17, 25, 34, 50, 85, 170, 425, 850
851	1, 23, 37, 851
852	1, 2, 3, 4, 6, 12, 71, 142, 213, 284, 426, 852
853	1, 853
854	1, 2, 7, 14, 61, 122, 427, 854
855	1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855
856	1, 2, 4, 8, 107, 214, 428, 856
857	1, 857
858	1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 143, 286, 429, 858
859	1, 859
860	1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860
861	1, 3, 7, 21, 41, 123, 287, 861
862	1, 2, 431, 862
863	1, 863
864	1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 72, 96, 108, 144, 216, 288, 432, 864
865	1, 5, 173, 865
866	1, 2, 433, 866
867	1, 3, 17, 51, 289, 867
868	1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868
869	1, 11, 79, 869

FAQ

What are the factors of 855?

Factors of 855: 1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855

How many factors does 855 have?

Number 855 has 12 factors

How many factor pairs does 855 have?

Number 855 has 6 factor pairs

Is 855 a prime or composite number?

Composite: 855 = 3² × 5 × 19, so it has 12 factors — a prime has exactly two.

How many factors does 855 have excluding 1 and 855?

10: 3, 5, 9, 15, 19, 45, 57, 95, 171 and 285.