Factors of 78

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What are the Factors of 78?

Answer

Factors of 78:

1, 2, 3, 6, 13, 26, 39, 78

8 factors · 78 = 2 × 3 × 13 · composite

Underlined — prime: 2, 3, 13 · 1 — neither prime nor composite · others — composite

Factor pairs of 78

4 pairs: 1 × 78 · 2 × 39 · 3 × 26 · 6 × 13

Past √78 ≈ 8.83 every pair would repeat one already found — so checking stops at 8.

78 = 2 × 3 × 13 → (1 + 1) × (1 + 1) × (1 + 1) = 8 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
63	1, 3, 7, 9, 21, 63
64	1, 2, 4, 8, 16, 32, 64
65	1, 5, 13, 65
66	1, 2, 3, 6, 11, 22, 33, 66
67	1, 67
68	1, 2, 4, 17, 34, 68
69	1, 3, 23, 69
70	1, 2, 5, 7, 10, 14, 35, 70
71	1, 71
72	1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
73	1, 73
74	1, 2, 37, 74
75	1, 3, 5, 15, 25, 75
76	1, 2, 4, 19, 38, 76
77	1, 7, 11, 77
78	1, 2, 3, 6, 13, 26, 39, 78
79	1, 79
80	1, 2, 4, 5, 8, 10, 16, 20, 40, 80
81	1, 3, 9, 27, 81
82	1, 2, 41, 82
83	1, 83
84	1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
85	1, 5, 17, 85
86	1, 2, 43, 86
87	1, 3, 29, 87
88	1, 2, 4, 8, 11, 22, 44, 88
89	1, 89
90	1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
91	1, 7, 13, 91
92	1, 2, 4, 23, 46, 92

FAQ

What are the Factors of 78?

Factors of 78: 1, 2, 3, 6, 13, 26, 39, 78

How many factors does 78 have?

Number 78 has 8 factors

How many Factor Pairs does 78 have?

Number 78 has 4 factor pairs

Is 78 a prime or composite number?

Composite: 78 = 2 × 3 × 13, so it has 8 factors — a prime has exactly two.

How many factors does 78 have excluding 1 and 78?

6: 2, 3, 6, 13, 26 and 39.