78828620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{303187}}^1$

素因数の和:303209

約数の個数: 24

約数和(自身を含む): 178274544

約数和(自身を除く): 99445924

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 303187, 606374, 1212748, 1515935, 3031870, 3941431, 6063740, 7882862, 15765724, 19707155, 39414310, 78828620]

約数ペア:

[(1, 78828620), (2, 39414310), (4, 19707155), (5, 15765724), (10, 7882862), (13, 6063740), (20, 3941431), (26, 3031870), (52, 1515935), (65, 1212748), (130, 606374), (260, 303187)]