668851205

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{640049}}^1$

素因数の和:640084

約数の個数: 16

約数和(自身を含む): 921672000

約数和(自身を除く): 252820795

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 640049, 3200245, 7040539, 12160931, 35202695, 60804655, 133770241, 668851205]

約数ペア:

[(1, 668851205), (5, 133770241), (11, 60804655), (19, 35202695), (55, 12160931), (95, 7040539), (209, 3200245), (1045, 640049)]