Factors of 189

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What are the Factors of 189?

Answer

Factors of 189:

1, 3, 7, 9, 21, 27, 63, 189

8 factors · 189 = 3³ × 7 · composite

Underlined — prime: 3, 7 · 1 — neither prime nor composite · others — composite

Factor pairs of 189

4 pairs: 1 × 189 · 3 × 63 · 7 × 27 · 9 × 21

Past √189 ≈ 13.75 every pair would repeat one already found — so checking stops at 13.

189 = 3³ × 7 → (3 + 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
174	1, 2, 3, 6, 29, 58, 87, 174
175	1, 5, 7, 25, 35, 175
176	1, 2, 4, 8, 11, 16, 22, 44, 88, 176
177	1, 3, 59, 177
178	1, 2, 89, 178
179	1, 179
180	1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180
181	1, 181
182	1, 2, 7, 13, 14, 26, 91, 182
183	1, 3, 61, 183
184	1, 2, 4, 8, 23, 46, 92, 184
185	1, 5, 37, 185
186	1, 2, 3, 6, 31, 62, 93, 186
187	1, 11, 17, 187
188	1, 2, 4, 47, 94, 188
189	1, 3, 7, 9, 21, 27, 63, 189
190	1, 2, 5, 10, 19, 38, 95, 190
191	1, 191
192	1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 192
193	1, 193
194	1, 2, 97, 194
195	1, 3, 5, 13, 15, 39, 65, 195
196	1, 2, 4, 7, 14, 28, 49, 98, 196
197	1, 197
198	1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198
199	1, 199
200	1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200
201	1, 3, 67, 201
202	1, 2, 101, 202
203	1, 7, 29, 203

FAQ

What are the Factors of 189?

Factors of 189: 1, 3, 7, 9, 21, 27, 63, 189

How many factors does 189 have?

Number 189 has 8 factors

How many Factor Pairs does 189 have?

Number 189 has 4 factor pairs

Is 189 a prime or composite number?

Composite: 189 = 3³ × 7, so it has 8 factors — a prime has exactly two.

How many factors does 189 have excluding 1 and 189?

6: 3, 7, 9, 21, 27 and 63.