21459265

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{1999}}^1$

素因数の和:2136

約数の個数: 16

約数和(自身を含む): 27360000

約数和(自身を除く): 5900735

約数列:

[1, 5, 19, 95, 113, 565, 1999, 2147, 9995, 10735, 37981, 189905, 225887, 1129435, 4291853, 21459265]

約数ペア:

[(1, 21459265), (5, 4291853), (19, 1129435), (95, 225887), (113, 189905), (565, 37981), (1999, 10735), (2147, 9995)]