20654725

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1297}}^1$

素因数の和:1334

約数の個数: 36

約数和(自身を含む): 32109924

約数和(自身を除く): 11455199

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 91, 175, 245, 325, 455, 637, 1225, 1297, 2275, 3185, 6485, 9079, 15925, 16861, 32425, 45395, 63553, 84305, 118027, 226975, 317765, 421525, 590135, 826189, 1588825, 2950675, 4130945, 20654725]

約数ペア:

[(1, 20654725), (5, 4130945), (7, 2950675), (13, 1588825), (25, 826189), (35, 590135), (49, 421525), (65, 317765), (91, 226975), (175, 118027), (245, 84305), (325, 63553), (455, 45395), (637, 32425), (1225, 16861), (1297, 15925), (2275, 9079), (3185, 6485)]