20493967

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{311}}^1$

素因数の和:498

約数の個数: 16

約数和(自身を含む): 22905792

約数和(自身を除く): 2411825

約数列:

[1, 13, 37, 137, 311, 481, 1781, 4043, 5069, 11507, 42607, 65897, 149591, 553891, 1576459, 20493967]

約数ペア:

[(1, 20493967), (13, 1576459), (37, 553891), (137, 149591), (311, 65897), (481, 42607), (1781, 11507), (4043, 5069)]