20516340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{907}}^1$

素因数の和:961

約数の個数: 96

約数和(自身を含む): 64068480

約数和(自身を除く): 43552140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 29, 30, 39, 52, 58, 60, 65, 78, 87, 116, 130, 145, 156, 174, 195, 260, 290, 348, 377, 390, 435, 580, 754, 780, 870, 907, 1131, 1508, 1740, 1814, 1885, 2262, 2721, 3628, 3770, 4524, 4535, 5442, 5655, 7540, 9070, 10884, 11310, 11791, 13605, 18140, 22620, 23582, 26303, 27210, 35373, 47164, 52606, 54420, 58955, 70746, 78909, 105212, 117910, 131515, 141492, 157818, 176865, 235820, 263030, 315636, 341939, 353730, 394545, 526060, 683878, 707460, 789090, 1025817, 1367756, 1578180, 1709695, 2051634, 3419390, 4103268, 5129085, 6838780, 10258170, 20516340]

約数ペア:

[(1, 20516340), (2, 10258170), (3, 6838780), (4, 5129085), (5, 4103268), (6, 3419390), (10, 2051634), (12, 1709695), (13, 1578180), (15, 1367756), (20, 1025817), (26, 789090), (29, 707460), (30, 683878), (39, 526060), (52, 394545), (58, 353730), (60, 341939), (65, 315636), (78, 263030), (87, 235820), (116, 176865), (130, 157818), (145, 141492), (156, 131515), (174, 117910), (195, 105212), (260, 78909), (290, 70746), (348, 58955), (377, 54420), (390, 52606), (435, 47164), (580, 35373), (754, 27210), (780, 26303), (870, 23582), (907, 22620), (1131, 18140), (1508, 13605), (1740, 11791), (1814, 11310), (1885, 10884), (2262, 9070), (2721, 7540), (3628, 5655), (3770, 5442), (4524, 4535)]