688220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2647}}^1$

素因数の和:2669

約数の個数: 24

約数和(自身を含む): 1557024

約数和(自身を除く): 868804

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2647, 5294, 10588, 13235, 26470, 34411, 52940, 68822, 137644, 172055, 344110, 688220]

約数ペア:

[(1, 688220), (2, 344110), (4, 172055), (5, 137644), (10, 68822), (13, 52940), (20, 34411), (26, 26470), (52, 13235), (65, 10588), (130, 5294), (260, 2647)]