12988820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{49957}}^1$

素因数の和:49979

約数の個数: 24

約数和(自身を含む): 29375304

約数和(自身を除く): 16386484

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 49957, 99914, 199828, 249785, 499570, 649441, 999140, 1298882, 2597764, 3247205, 6494410, 12988820]

約数ペア:

[(1, 12988820), (2, 6494410), (4, 3247205), (5, 2597764), (10, 1298882), (13, 999140), (20, 649441), (26, 499570), (52, 249785), (65, 199828), (130, 99914), (260, 49957)]