Factors of 80

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What are the Factors of 80?

Answer

Factors of 80:

1, 2, 4, 5, 8, 10, 16, 20, 40, 80

10 factors · 80 = 2⁴ × 5 · composite

Underlined — prime: 2, 5 · 1 — neither prime nor composite · others — composite

Factor pairs of 80

5 pairs: 1 × 80 · 2 × 40 · 4 × 20 · 5 × 16 · 8 × 10

Past √80 ≈ 8.94 every pair would repeat one already found — so checking stops at 8.

80 = 2⁴ × 5 → (4 + 1) × (1 + 1) = 10 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
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
93	1, 3, 31, 93
94	1, 2, 47, 94

FAQ

What are the Factors of 80?

Factors of 80: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

How many factors does 80 have?

Number 80 has 10 factors

How many Factor Pairs does 80 have?

Number 80 has 5 factor pairs

Is 80 a prime or composite number?

Composite: 80 = 2⁴ × 5, so it has 10 factors — a prime has exactly two.

How many factors does 80 have excluding 1 and 80?

8: 2, 4, 5, 8, 10, 16, 20 and 40.