20520070

素因数分解:

$2^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{12589}}^1$

素因数の和:12759

約数の個数: 16

約数和(自身を含む): 37165680

約数和(自身を除く): 16645610

約数列:

[1, 2, 5, 10, 163, 326, 815, 1630, 12589, 25178, 62945, 125890, 2052007, 4104014, 10260035, 20520070]

約数ペア:

[(1, 20520070), (2, 10260035), (5, 4104014), (10, 2052007), (163, 125890), (326, 62945), (815, 25178), (1630, 12589)]