20661525

素因数分解:

$3^2\times 5^2\times {\mathrm{229}}^1\times {\mathrm{401}}^1$

素因数の和:646

約数の個数: 36

約数和(自身を含む): 37261380

約数和(自身を除く): 16599855

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 229, 401, 687, 1145, 1203, 2005, 2061, 3435, 3609, 5725, 6015, 10025, 10305, 17175, 18045, 30075, 51525, 90225, 91829, 275487, 459145, 826461, 1377435, 2295725, 4132305, 6887175, 20661525]

約数ペア:

[(1, 20661525), (3, 6887175), (5, 4132305), (9, 2295725), (15, 1377435), (25, 826461), (45, 459145), (75, 275487), (225, 91829), (229, 90225), (401, 51525), (687, 30075), (1145, 18045), (1203, 17175), (2005, 10305), (2061, 10025), (3435, 6015), (3609, 5725)]