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    Factors of 1240

    "Factors of a Number" Calculator
    Factors of

    What are the Factors of 1,240?

    Answer

    Factors of 1,240:
    1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240

    16 factors · 1240 = 23 × 5 × 31 · composite

    Underlined — prime: 2, 5, 31 · 1 — neither prime nor composite · others — composite

    Factor pairs of 1,240

    • 1 × 1240
    • 2 × 620
    • 4 × 310
    • 5 × 248
    • 8 × 155
    • 10 × 124
    • 20 × 62
    • 31 × 40

    √1240 ≈ 35.21 — the last pair 31 × 40 sits here; past it pairs repeat.

    1240 = 23 × 5 × 31 → (3 + 1) × (1 + 1) × (1 + 1) = 16 factors: add 1 to each exponent and multiply.

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    Factors of 1240. Factors of 1,240: full list and factor pairs.
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    Factors Table

    NumberFactors
    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
    1,2871, 3, 9, 11, 13, 33, 39, 99, 117, 143, 429, 1287
    1,2901, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290
    1,2951, 5, 7, 35, 37, 185, 259, 1295
    1,2961, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 81, 108, 144, 162, 216, 324, 432, 648, 1296
    Recalculate with different values ↑

    FAQ

    What are the Factors of 1,240?

    Factors of 1,240: 1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240

    How many factors does 1,240 have?

    Number 1,240 has 16 factors

    How many Factor Pairs does 1,240 have?

    Number 1,240 has 8 factor pairs

    Is 1,240 a prime or composite number?

    Composite: 1240 = 2³ × 5 × 31, so it has 16 factors — a prime has exactly two.

    How many factors does 1,240 have excluding 1 and 1,240?

    14: 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310 and 620.

    See Also