20388420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8713}}^1$

素因数の和:8741

約数の個数: 72

約数和(自身を含む): 66609816

約数和(自身を除く): 46221396

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8713, 17426, 26139, 34852, 43565, 52278, 78417, 87130, 104556, 113269, 130695, 156834, 174260, 226538, 261390, 313668, 339807, 392085, 453076, 522780, 566345, 679614, 784170, 1019421, 1132690, 1359228, 1568340, 1699035, 2038842, 2265380, 3398070, 4077684, 5097105, 6796140, 10194210, 20388420]

約数ペア:

[(1, 20388420), (2, 10194210), (3, 6796140), (4, 5097105), (5, 4077684), (6, 3398070), (9, 2265380), (10, 2038842), (12, 1699035), (13, 1568340), (15, 1359228), (18, 1132690), (20, 1019421), (26, 784170), (30, 679614), (36, 566345), (39, 522780), (45, 453076), (52, 392085), (60, 339807), (65, 313668), (78, 261390), (90, 226538), (117, 174260), (130, 156834), (156, 130695), (180, 113269), (195, 104556), (234, 87130), (260, 78417), (390, 52278), (468, 43565), (585, 34852), (780, 26139), (1170, 17426), (2340, 8713)]