20446580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1$

素因数の和:126

約数の個数: 144

約数和(自身を含む): 57915648

約数和(自身を除く): 37469068

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 20, 22, 28, 34, 35, 44, 55, 68, 70, 71, 77, 85, 110, 119, 121, 140, 142, 154, 170, 187, 220, 238, 242, 284, 308, 340, 355, 374, 385, 476, 484, 497, 595, 605, 710, 748, 770, 781, 847, 935, 994, 1190, 1207, 1210, 1309, 1420, 1540, 1562, 1694, 1870, 1988, 2057, 2380, 2414, 2420, 2485, 2618, 3124, 3388, 3740, 3905, 4114, 4235, 4828, 4970, 5236, 5467, 6035, 6545, 7810, 8228, 8449, 8470, 8591, 9940, 10285, 10934, 12070, 13090, 13277, 14399, 15620, 16898, 16940, 17182, 20570, 21868, 24140, 26180, 26554, 27335, 28798, 33796, 34364, 41140, 42245, 42955, 53108, 54670, 57596, 60137, 66385, 71995, 84490, 85910, 92939, 109340, 120274, 132770, 143990, 146047, 168980, 171820, 185878, 240548, 265540, 287980, 292094, 300685, 371756, 464695, 584188, 601370, 730235, 929390, 1022329, 1202740, 1460470, 1858780, 2044658, 2920940, 4089316, 5111645, 10223290, 20446580]

約数ペア:

[(1, 20446580), (2, 10223290), (4, 5111645), (5, 4089316), (7, 2920940), (10, 2044658), (11, 1858780), (14, 1460470), (17, 1202740), (20, 1022329), (22, 929390), (28, 730235), (34, 601370), (35, 584188), (44, 464695), (55, 371756), (68, 300685), (70, 292094), (71, 287980), (77, 265540), (85, 240548), (110, 185878), (119, 171820), (121, 168980), (140, 146047), (142, 143990), (154, 132770), (170, 120274), (187, 109340), (220, 92939), (238, 85910), (242, 84490), (284, 71995), (308, 66385), (340, 60137), (355, 57596), (374, 54670), (385, 53108), (476, 42955), (484, 42245), (497, 41140), (595, 34364), (605, 33796), (710, 28798), (748, 27335), (770, 26554), (781, 26180), (847, 24140), (935, 21868), (994, 20570), (1190, 17182), (1207, 16940), (1210, 16898), (1309, 15620), (1420, 14399), (1540, 13277), (1562, 13090), (1694, 12070), (1870, 10934), (1988, 10285), (2057, 9940), (2380, 8591), (2414, 8470), (2420, 8449), (2485, 8228), (2618, 7810), (3124, 6545), (3388, 6035), (3740, 5467), (3905, 5236), (4114, 4970), (4235, 4828)]