168220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{647}}^1$

素因数の和:669

約数の個数: 24

約数和(自身を含む): 381024

約数和(自身を除く): 212804

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 647, 1294, 2588, 3235, 6470, 8411, 12940, 16822, 33644, 42055, 84110, 168220]

約数ペア:

[(1, 168220), (2, 84110), (4, 42055), (5, 33644), (10, 16822), (13, 12940), (20, 8411), (26, 6470), (52, 3235), (65, 2588), (130, 1294), (260, 647)]