21878516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{497239}}^1$

素因数の和:497254

約数の個数: 12

約数和(自身を含む): 41768160

約数和(自身を除く): 19889644

約数列:

[1, 2, 4, 11, 22, 44, 497239, 994478, 1988956, 5469629, 10939258, 21878516]

約数ペア:

[(1, 21878516), (2, 10939258), (4, 5469629), (11, 1988956), (22, 994478), (44, 497239)]