Factors of 128

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What are the Factors of 128?

Answer

Factors of 128:

1, 2, 4, 8, 16, 32, 64, 128

8 factors · 128 = 2⁷ · composite

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

Factor pairs of 128

4 pairs: 1 × 128 · 2 × 64 · 4 × 32 · 8 × 16

Past √128 ≈ 11.31 every pair would repeat one already found — so checking stops at 11.

128 = 2⁷ → (7 + 1) = 8 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

Recalculate with different values ↑

Factors Table

Number	Factors
113	1, 113
114	1, 2, 3, 6, 19, 38, 57, 114
115	1, 5, 23, 115
116	1, 2, 4, 29, 58, 116
117	1, 3, 9, 13, 39, 117
118	1, 2, 59, 118
119	1, 7, 17, 119
120	1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120
121	1, 11, 121
122	1, 2, 61, 122
123	1, 3, 41, 123
124	1, 2, 4, 31, 62, 124
125	1, 5, 25, 125
126	1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126
127	1, 127
128	1, 2, 4, 8, 16, 32, 64, 128
129	1, 3, 43, 129
130	1, 2, 5, 10, 13, 26, 65, 130
131	1, 131
132	1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132
133	1, 7, 19, 133
134	1, 2, 67, 134
135	1, 3, 5, 9, 15, 27, 45, 135
136	1, 2, 4, 8, 17, 34, 68, 136
137	1, 137
138	1, 2, 3, 6, 23, 46, 69, 138
139	1, 139
140	1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140
141	1, 3, 47, 141
142	1, 2, 71, 142

FAQ

What are the Factors of 128?

Factors of 128: 1, 2, 4, 8, 16, 32, 64, 128

How many factors does 128 have?

Number 128 has 8 factors

How many Factor Pairs does 128 have?

Number 128 has 4 factor pairs

Is 128 a prime or composite number?

Composite: 128 = 2⁷, so it has 8 factors — a prime has exactly two.

How many factors does 128 have excluding 1 and 128?

6: 2, 4, 8, 16, 32 and 64.