80719340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{310459}}^1$

素因数の和:310481

約数の個数: 24

約数和(自身を含む): 182550480

約数和(自身を除く): 101831140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 310459, 620918, 1241836, 1552295, 3104590, 4035967, 6209180, 8071934, 16143868, 20179835, 40359670, 80719340]

約数ペア:

[(1, 80719340), (2, 40359670), (4, 20179835), (5, 16143868), (10, 8071934), (13, 6209180), (20, 4035967), (26, 3104590), (52, 1552295), (65, 1241836), (130, 620918), (260, 310459)]