81240580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{213791}}^1$

素因数の和:213819

約数の個数: 24

約数和(自身を含む): 179585280

約数和(自身を除く): 98344700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 213791, 427582, 855164, 1068955, 2137910, 4062029, 4275820, 8124058, 16248116, 20310145, 40620290, 81240580]

約数ペア:

[(1, 81240580), (2, 40620290), (4, 20310145), (5, 16248116), (10, 8124058), (19, 4275820), (20, 4062029), (38, 2137910), (76, 1068955), (95, 855164), (190, 427582), (380, 213791)]