21851804

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{8941}}^1$

素因数の和:9005

約数の個数: 24

約数和(自身を含む): 42063168

約数和(自身を除く): 20211364

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 188, 611, 1222, 2444, 8941, 17882, 35764, 116233, 232466, 420227, 464932, 840454, 1680908, 5462951, 10925902, 21851804]

約数ペア:

[(1, 21851804), (2, 10925902), (4, 5462951), (13, 1680908), (26, 840454), (47, 464932), (52, 420227), (94, 232466), (188, 116233), (611, 35764), (1222, 17882), (2444, 8941)]