Factors of 138

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What are the Factors of 138?

Answer

Factors of 138:

1, 2, 3, 6, 23, 46, 69, 138

8 factors · 138 = 2 × 3 × 23 · composite

Underlined — prime: 2, 3, 23 · 1 — neither prime nor composite · others — composite

Factor pairs of 138

4 pairs: 1 × 138 · 2 × 69 · 3 × 46 · 6 × 23

Past √138 ≈ 11.75 every pair would repeat one already found — so checking stops at 11.

138 = 2 × 3 × 23 → (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
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
143	1, 11, 13, 143
144	1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144
145	1, 5, 29, 145
146	1, 2, 73, 146
147	1, 3, 7, 21, 49, 147
148	1, 2, 4, 37, 74, 148
149	1, 149
150	1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150
151	1, 151
152	1, 2, 4, 8, 19, 38, 76, 152

FAQ

What are the Factors of 138?

Factors of 138: 1, 2, 3, 6, 23, 46, 69, 138

How many factors does 138 have?

Number 138 has 8 factors

How many Factor Pairs does 138 have?

Number 138 has 4 factor pairs

Is 138 a prime or composite number?

Composite: 138 = 2 × 3 × 23, so it has 8 factors — a prime has exactly two.

How many factors does 138 have excluding 1 and 138?

6: 2, 3, 6, 23, 46 and 69.