20181657340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{725437}}^1$

素因数の和:725566

約数の個数: 48

約数和(自身を含む): 46068214752

約数和(自身を除く): 25886557412

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 214, 260, 428, 535, 1070, 1391, 2140, 2782, 5564, 6955, 13910, 27820, 725437, 1450874, 2901748, 3627185, 7254370, 9430681, 14508740, 18861362, 37722724, 47153405, 77621759, 94306810, 155243518, 188613620, 310487036, 388108795, 776217590, 1009082867, 1552435180, 2018165734, 4036331468, 5045414335, 10090828670, 20181657340]

約数ペア:

[(1, 20181657340), (2, 10090828670), (4, 5045414335), (5, 4036331468), (10, 2018165734), (13, 1552435180), (20, 1009082867), (26, 776217590), (52, 388108795), (65, 310487036), (107, 188613620), (130, 155243518), (214, 94306810), (260, 77621759), (428, 47153405), (535, 37722724), (1070, 18861362), (1391, 14508740), (2140, 9430681), (2782, 7254370), (5564, 3627185), (6955, 2901748), (13910, 1450874), (27820, 725437)]