Factors of 1220

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What are the Factors of 1,220?

Answer

Factors of 1,220:
1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220

12 factors · 1220 = 22 × 5 × 61 · composite

Underlined — prime: 2, 5, 61 · 1 — neither prime nor composite · others — composite

Factor pairs of 1,220

  • 1 × 1220
  • 2 × 610
  • 4 × 305
  • 5 × 244
  • 10 × 122
  • 20 × 61

√1220 ≈ 34.93 — the last pair 20 × 61 sits here; past it pairs repeat.

1220 = 22 × 5 × 61 → (2 + 1) × (1 + 1) × (1 + 1) = 12 factors: add 1 to each exponent and multiply.

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Factors Table

NumberFactors
1,1501, 2, 5, 10, 23, 25, 46, 50, 115, 230, 575, 1150
1,1551, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155
1,1601, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160
1,1651, 5, 233, 1165
1,1671, 3, 389, 1167
1,1701, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 90, 117, 130, 195, 234, 390, 585, 1170
1,1751, 5, 25, 47, 235, 1175
1,1801, 2, 4, 5, 10, 20, 59, 118, 236, 295, 590, 1180
1,1851, 3, 5, 15, 79, 237, 395, 1185
1,1901, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 119, 170, 238, 595, 1190
1,1951, 5, 239, 1195
1,2001, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 48, 50, 60, 75, 80, 100, 120, 150, 200, 240, 300, 400, 600, 1200
1,2051, 5, 241, 1205
1,2101, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210
1,2151, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215
1,2201, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220
1,2251, 5, 7, 25, 35, 49, 175, 245, 1225
1,2301, 2, 3, 5, 6, 10, 15, 30, 41, 82, 123, 205, 246, 410, 615, 1230
1,2351, 5, 13, 19, 65, 95, 247, 1235
1,2401, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240
1,2451, 3, 5, 15, 83, 249, 415, 1245
1,2501, 2, 5, 10, 25, 50, 125, 250, 625, 1250
1,2551, 5, 251, 1255
1,2601, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260
1,2651, 5, 11, 23, 55, 115, 253, 1265
1,2701, 2, 5, 10, 127, 254, 635, 1270
1,2751, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275
1,2801, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280
1,2841, 2, 3, 4, 6, 12, 107, 214, 321, 428, 642, 1284
1,2851, 5, 257, 1285

FAQ

What are the Factors of 1,220?

Factors of 1,220: 1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220

How many factors does 1,220 have?

Number 1,220 has 12 factors

How many Factor Pairs does 1,220 have?

Number 1,220 has 6 factor pairs

Is 1,220 a prime or composite number?

Composite: 1220 = 2² × 5 × 61, so it has 12 factors — a prime has exactly two.

How many factors does 1,220 have excluding 1 and 1,220?

10: 2, 4, 5, 10, 20, 61, 122, 244, 305 and 610.

See Also