21100816

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{119891}}^1$

素因数の和:119910

約数の個数: 20

約数和(自身を含む): 44599824

約数和(自身を除く): 23499008

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 119891, 239782, 479564, 959128, 1318801, 1918256, 2637602, 5275204, 10550408, 21100816]

約数ペア:

[(1, 21100816), (2, 10550408), (4, 5275204), (8, 2637602), (11, 1918256), (16, 1318801), (22, 959128), (44, 479564), (88, 239782), (176, 119891)]