20118787

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{277}}^1$

素因数の和:478

約数の個数: 16

約数和(自身を含む): 22480192

約数和(自身を除く): 2361405

約数列:

[1, 13, 37, 151, 277, 481, 1963, 3601, 5587, 10249, 41827, 72631, 133237, 543751, 1547599, 20118787]

約数ペア:

[(1, 20118787), (13, 1547599), (37, 543751), (151, 133237), (277, 72631), (481, 41827), (1963, 10249), (3601, 5587)]