80648620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{310187}}^1$

素因数の和:310209

約数の個数: 24

約数和(自身を含む): 182390544

約数和(自身を除く): 101741924

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 310187, 620374, 1240748, 1550935, 3101870, 4032431, 6203740, 8064862, 16129724, 20162155, 40324310, 80648620]

約数ペア:

[(1, 80648620), (2, 40324310), (4, 20162155), (5, 16129724), (10, 8064862), (13, 6203740), (20, 4032431), (26, 3101870), (52, 1550935), (65, 1240748), (130, 620374), (260, 310187)]