64331425

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{997}}^1$

素因数の和:1125

約数の個数: 24

約数和(自身を含む): 83532600

約数和(自身を除く): 19201175

約数列:

[1, 5, 25, 29, 89, 145, 445, 725, 997, 2225, 2581, 4985, 12905, 24925, 28913, 64525, 88733, 144565, 443665, 722825, 2218325, 2573257, 12866285, 64331425]

約数ペア:

[(1, 64331425), (5, 12866285), (25, 2573257), (29, 2218325), (89, 722825), (145, 443665), (445, 144565), (725, 88733), (997, 64525), (2225, 28913), (2581, 24925), (4985, 12905)]