20512133980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78892823}}^1$

素因数の和:78892845

約数の個数: 24

約数和(自身を含む): 46388980512

約数和(自身を除く): 25876846532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78892823, 157785646, 315571292, 394464115, 788928230, 1025606699, 1577856460, 2051213398, 4102426796, 5128033495, 10256066990, 20512133980]

約数ペア:

[(1, 20512133980), (2, 10256066990), (4, 5128033495), (5, 4102426796), (10, 2051213398), (13, 1577856460), (20, 1025606699), (26, 788928230), (52, 394464115), (65, 315571292), (130, 157785646), (260, 78892823)]