20675555

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{419}}^1$

素因数の和:634

約数の個数: 16

約数和(自身を含む): 25401600

約数和(自身を除く): 4726045

約数列:

[1, 5, 71, 139, 355, 419, 695, 2095, 9869, 29749, 49345, 58241, 148745, 291205, 4135111, 20675555]

約数ペア:

[(1, 20675555), (5, 4135111), (71, 291205), (139, 148745), (355, 58241), (419, 49345), (695, 29749), (2095, 9869)]