21821987525

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1871}}^1\times {\mathrm{2111}}^1$

素因数の和:4022

約数の個数: 48

約数和(自身を含む): 30886023168

約数和(自身を除く): 9064035643

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 325, 425, 1105, 1871, 2111, 5525, 9355, 10555, 24323, 27443, 31807, 35887, 46775, 52775, 121615, 137215, 159035, 179435, 413491, 466531, 608075, 686075, 795175, 897175, 2067455, 2332655, 3949681, 10337275, 11663275, 19748405, 51345853, 67144577, 98742025, 256729265, 335722885, 872879501, 1283646325, 1678614425, 4364397505, 21821987525]

約数ペア:

[(1, 21821987525), (5, 4364397505), (13, 1678614425), (17, 1283646325), (25, 872879501), (65, 335722885), (85, 256729265), (221, 98742025), (325, 67144577), (425, 51345853), (1105, 19748405), (1871, 11663275), (2111, 10337275), (5525, 3949681), (9355, 2332655), (10555, 2067455), (24323, 897175), (27443, 795175), (31807, 686075), (35887, 608075), (46775, 466531), (52775, 413491), (121615, 179435), (137215, 159035)]