390271025

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{219871}}^1$

素因数の和:219952

約数の個数: 12

約数和(自身を含む): 490754304

約数和(自身を除く): 100483279

約数列:

[1, 5, 25, 71, 355, 1775, 219871, 1099355, 5496775, 15610841, 78054205, 390271025]

約数ペア:

[(1, 390271025), (5, 78054205), (25, 15610841), (71, 5496775), (355, 1099355), (1775, 219871)]