20123763725

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{4763021}}^1$

素因数の和:4763057

約数の個数: 18

約数和(自身を含む): 27020623806

約数和(自身を除く): 6896860081

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 4763021, 23815105, 61919273, 119075525, 309596365, 804950549, 1547981825, 4024752745, 20123763725]

約数ペア:

[(1, 20123763725), (5, 4024752745), (13, 1547981825), (25, 804950549), (65, 309596365), (169, 119075525), (325, 61919273), (845, 23815105), (4225, 4763021)]