81215381

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{1471}}^1$

素因数の和:1652

約数の個数: 16

約数和(自身を含む): 91004928

約数和(自身を除く): 9789547

約数列:

[1, 13, 31, 137, 403, 1471, 1781, 4247, 19123, 45601, 55211, 201527, 592813, 2619851, 6247337, 81215381]

約数ペア:

[(1, 81215381), (13, 6247337), (31, 2619851), (137, 592813), (403, 201527), (1471, 55211), (1781, 45601), (4247, 19123)]