81218225

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{26849}}^1$

素因数の和:26881

約数の個数: 18

約数和(自身を含む): 110702550

約数和(自身を除く): 29484325

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 26849, 134245, 295339, 671225, 1476695, 3248729, 7383475, 16243645, 81218225]

約数ペア:

[(1, 81218225), (5, 16243645), (11, 7383475), (25, 3248729), (55, 1476695), (121, 671225), (275, 295339), (605, 134245), (3025, 26849)]