21495513

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{2287}}^1$

素因数の和:2544

約数の個数: 16

約数和(自身を含む): 31006976

約数和(自身を除く): 9511463

約数列:

[1, 3, 13, 39, 241, 723, 2287, 3133, 6861, 9399, 29731, 89193, 551167, 1653501, 7165171, 21495513]

約数ペア:

[(1, 21495513), (3, 7165171), (13, 1653501), (39, 551167), (241, 89193), (723, 29731), (2287, 9399), (3133, 6861)]