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Factors of 220

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What are the factors of 220?

Answer

Factors of 220:

1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220

12 factors · 220 = 2² × 5 × 11 · composite

Underlined — prime: 2, 5, 11 · 1 — neither prime nor composite · others — composite

Factor pairs of 220

1 × 220
2 × 110
4 × 55
5 × 44
10 × 22
11 × 20

√220 ≈ 14.83 — the last pair 11 × 20 sits here; past it pairs repeat.

220 = 2² × 5 × 11 → (2 + 1) × (1 + 1) × (1 + 1) = 12 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 of 220. Factors of 220: full list and factor pairs.

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Factors Table

Number	Factors
205	1, 5, 41, 205
206	1, 2, 103, 206
207	1, 3, 9, 23, 69, 207
208	1, 2, 4, 8, 13, 16, 26, 52, 104, 208
209	1, 11, 19, 209
210	1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210
211	1, 211
212	1, 2, 4, 53, 106, 212
213	1, 3, 71, 213
214	1, 2, 107, 214
215	1, 5, 43, 215
216	1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216
217	1, 7, 31, 217
218	1, 2, 109, 218
219	1, 3, 73, 219
220	1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220
221	1, 13, 17, 221
222	1, 2, 3, 6, 37, 74, 111, 222
223	1, 223
224	1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224
225	1, 3, 5, 9, 15, 25, 45, 75, 225
226	1, 2, 113, 226
227	1, 227
228	1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228
229	1, 229
230	1, 2, 5, 10, 23, 46, 115, 230
231	1, 3, 7, 11, 21, 33, 77, 231
232	1, 2, 4, 8, 29, 58, 116, 232
233	1, 233
234	1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234

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FAQ

What are the factors of 220?

Factors of 220: 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220

How many factors does 220 have?

Number 220 has 12 factors

How many factor pairs does 220 have?

Number 220 has 6 factor pairs

Is 220 a prime or composite number?

Composite: 220 = 2² × 5 × 11, so it has 12 factors — a prime has exactly two.

How many factors does 220 have excluding 1 and 220?

10: 2, 4, 5, 10, 11, 20, 22, 44, 55 and 110.