28315640

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{3911}}^1$

素因数の和:4103

約数の個数: 32

約数和(自身を含む): 64078560

約数和(自身を除く): 35762920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 3911, 7240, 7822, 15644, 19555, 31288, 39110, 78220, 156440, 707891, 1415782, 2831564, 3539455, 5663128, 7078910, 14157820, 28315640]

約数ペア:

[(1, 28315640), (2, 14157820), (4, 7078910), (5, 5663128), (8, 3539455), (10, 2831564), (20, 1415782), (40, 707891), (181, 156440), (362, 78220), (724, 39110), (905, 31288), (1448, 19555), (1810, 15644), (3620, 7822), (3911, 7240)]