20188140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{677}}^1$

素因数の和:767

約数の個数: 96

約数和(自身を含む): 65608704

約数和(自身を除く): 45420564

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 71, 84, 105, 140, 142, 210, 213, 284, 355, 420, 426, 497, 677, 710, 852, 994, 1065, 1354, 1420, 1491, 1988, 2031, 2130, 2485, 2708, 2982, 3385, 4062, 4260, 4739, 4970, 5964, 6770, 7455, 8124, 9478, 9940, 10155, 13540, 14217, 14910, 18956, 20310, 23695, 28434, 29820, 40620, 47390, 48067, 56868, 71085, 94780, 96134, 142170, 144201, 192268, 240335, 284340, 288402, 336469, 480670, 576804, 672938, 721005, 961340, 1009407, 1345876, 1442010, 1682345, 2018814, 2884020, 3364690, 4037628, 5047035, 6729380, 10094070, 20188140]

約数ペア:

[(1, 20188140), (2, 10094070), (3, 6729380), (4, 5047035), (5, 4037628), (6, 3364690), (7, 2884020), (10, 2018814), (12, 1682345), (14, 1442010), (15, 1345876), (20, 1009407), (21, 961340), (28, 721005), (30, 672938), (35, 576804), (42, 480670), (60, 336469), (70, 288402), (71, 284340), (84, 240335), (105, 192268), (140, 144201), (142, 142170), (210, 96134), (213, 94780), (284, 71085), (355, 56868), (420, 48067), (426, 47390), (497, 40620), (677, 29820), (710, 28434), (852, 23695), (994, 20310), (1065, 18956), (1354, 14910), (1420, 14217), (1491, 13540), (1988, 10155), (2031, 9940), (2130, 9478), (2485, 8124), (2708, 7455), (2982, 6770), (3385, 5964), (4062, 4970), (4260, 4739)]