21504099

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{557}}^1\times {\mathrm{757}}^1$

素因数の和:1334

約数の個数: 16

約数和(自身を含む): 30453408

約数和(自身を除く): 8949309

約数列:

[1, 3, 17, 51, 557, 757, 1671, 2271, 9469, 12869, 28407, 38607, 421649, 1264947, 7168033, 21504099]

約数ペア:

[(1, 21504099), (3, 7168033), (17, 1264947), (51, 421649), (557, 38607), (757, 28407), (1671, 12869), (2271, 9469)]