201640025

素因数分解:

$5^2\times {\mathrm{113}}^1\times {\mathrm{137}}^1\times {\mathrm{521}}^1$

素因数の和:781

約数の個数: 24

約数和(自身を含む): 254575224

約数和(自身を除く): 52935199

約数列:

[1, 5, 25, 113, 137, 521, 565, 685, 2605, 2825, 3425, 13025, 15481, 58873, 71377, 77405, 294365, 356885, 387025, 1471825, 1784425, 8065601, 40328005, 201640025]

約数ペア:

[(1, 201640025), (5, 40328005), (25, 8065601), (113, 1784425), (137, 1471825), (521, 387025), (565, 356885), (685, 294365), (2605, 77405), (2825, 71377), (3425, 58873), (13025, 15481)]