18712540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{419}}^1$

素因数の和:475

約数の個数: 96

約数和(自身を含む): 50803200

約数和(自身を除く): 32090660

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 29, 35, 44, 55, 58, 70, 77, 110, 116, 140, 145, 154, 203, 220, 290, 308, 319, 385, 406, 419, 580, 638, 770, 812, 838, 1015, 1276, 1540, 1595, 1676, 2030, 2095, 2233, 2933, 3190, 4060, 4190, 4466, 4609, 5866, 6380, 8380, 8932, 9218, 11165, 11732, 12151, 14665, 18436, 22330, 23045, 24302, 29330, 32263, 44660, 46090, 48604, 58660, 60755, 64526, 85057, 92180, 121510, 129052, 133661, 161315, 170114, 243020, 267322, 322630, 340228, 425285, 534644, 645260, 668305, 850570, 935627, 1336610, 1701140, 1871254, 2673220, 3742508, 4678135, 9356270, 18712540]

約数ペア:

[(1, 18712540), (2, 9356270), (4, 4678135), (5, 3742508), (7, 2673220), (10, 1871254), (11, 1701140), (14, 1336610), (20, 935627), (22, 850570), (28, 668305), (29, 645260), (35, 534644), (44, 425285), (55, 340228), (58, 322630), (70, 267322), (77, 243020), (110, 170114), (116, 161315), (140, 133661), (145, 129052), (154, 121510), (203, 92180), (220, 85057), (290, 64526), (308, 60755), (319, 58660), (385, 48604), (406, 46090), (419, 44660), (580, 32263), (638, 29330), (770, 24302), (812, 23045), (838, 22330), (1015, 18436), (1276, 14665), (1540, 12151), (1595, 11732), (1676, 11165), (2030, 9218), (2095, 8932), (2233, 8380), (2933, 6380), (3190, 5866), (4060, 4609), (4190, 4466)]