31387680

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:399

約数の個数: 144

約数和(自身を含む): 108972864

約数和(自身を除く): 77585184

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 71, 72, 80, 90, 96, 120, 142, 144, 160, 180, 213, 240, 284, 288, 307, 355, 360, 426, 480, 568, 614, 639, 710, 720, 852, 921, 1065, 1136, 1228, 1278, 1420, 1440, 1535, 1704, 1842, 2130, 2272, 2456, 2556, 2763, 2840, 3070, 3195, 3408, 3684, 4260, 4605, 4912, 5112, 5526, 5680, 6140, 6390, 6816, 7368, 8520, 9210, 9824, 10224, 11052, 11360, 12280, 12780, 13815, 14736, 17040, 18420, 20448, 21797, 22104, 24560, 25560, 27630, 29472, 34080, 36840, 43594, 44208, 49120, 51120, 55260, 65391, 73680, 87188, 88416, 102240, 108985, 110520, 130782, 147360, 174376, 196173, 217970, 221040, 261564, 326955, 348752, 392346, 435940, 442080, 523128, 653910, 697504, 784692, 871880, 980865, 1046256, 1307820, 1569384, 1743760, 1961730, 2092512, 2615640, 3138768, 3487520, 3923460, 5231280, 6277536, 7846920, 10462560, 15693840, 31387680]

約数ペア:

[(1, 31387680), (2, 15693840), (3, 10462560), (4, 7846920), (5, 6277536), (6, 5231280), (8, 3923460), (9, 3487520), (10, 3138768), (12, 2615640), (15, 2092512), (16, 1961730), (18, 1743760), (20, 1569384), (24, 1307820), (30, 1046256), (32, 980865), (36, 871880), (40, 784692), (45, 697504), (48, 653910), (60, 523128), (71, 442080), (72, 435940), (80, 392346), (90, 348752), (96, 326955), (120, 261564), (142, 221040), (144, 217970), (160, 196173), (180, 174376), (213, 147360), (240, 130782), (284, 110520), (288, 108985), (307, 102240), (355, 88416), (360, 87188), (426, 73680), (480, 65391), (568, 55260), (614, 51120), (639, 49120), (710, 44208), (720, 43594), (852, 36840), (921, 34080), (1065, 29472), (1136, 27630), (1228, 25560), (1278, 24560), (1420, 22104), (1440, 21797), (1535, 20448), (1704, 18420), (1842, 17040), (2130, 14736), (2272, 13815), (2456, 12780), (2556, 12280), (2763, 11360), (2840, 11052), (3070, 10224), (3195, 9824), (3408, 9210), (3684, 8520), (4260, 7368), (4605, 6816), (4912, 6390), (5112, 6140), (5526, 5680)]