Factors of 87

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What are the Factors of 87?

Answer

Factors of 87:

1, 3, 29, 87

4 factors · 87 = 3 × 29 · composite

Underlined — prime: 3, 29 · 1 — neither prime nor composite · others — composite

Factor pairs of 87

2 pairs: 1 × 87 · 3 × 29

Past √87 ≈ 9.33 every pair would repeat one already found — so checking stops at 9.

87 = 3 × 29 → (1 + 1) × (1 + 1) = 4 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
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
95	1, 5, 19, 95
96	1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96
97	1, 97
98	1, 2, 7, 14, 49, 98
99	1, 3, 9, 11, 33, 99
100	1, 2, 4, 5, 10, 20, 25, 50, 100
101	1, 101

FAQ

What are the Factors of 87?

Factors of 87: 1, 3, 29, 87

How many factors does 87 have?

Number 87 has 4 factors

How many Factor Pairs does 87 have?

Number 87 has 2 factor pairs

Is 87 a prime or composite number?

Composite: 87 = 3 × 29, so it has 4 factors — a prime has exactly two.

How many factors does 87 have excluding 1 and 87?

2: 3 and 29.