20039825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{313}}^1$

素因数の和:533

約数の個数: 24

約数和(自身を含む): 26982648

約数和(自身を除く): 6942823

約数列:

[1, 5, 13, 25, 65, 197, 313, 325, 985, 1565, 2561, 4069, 4925, 7825, 12805, 20345, 61661, 64025, 101725, 308305, 801593, 1541525, 4007965, 20039825]

約数ペア:

[(1, 20039825), (5, 4007965), (13, 1541525), (25, 801593), (65, 308305), (197, 101725), (313, 64025), (325, 61661), (985, 20345), (1565, 12805), (2561, 7825), (4069, 4925)]