21086865140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1808479}}^1$

素因数の和:1808552

約数の個数: 48

約数和(自身を含む): 49219591680

約数和(自身を除く): 28132726540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 212, 220, 265, 530, 583, 1060, 1166, 2332, 2915, 5830, 11660, 1808479, 3616958, 7233916, 9042395, 18084790, 19893269, 36169580, 39786538, 79573076, 95849387, 99466345, 191698774, 198932690, 383397548, 397865380, 479246935, 958493870, 1054343257, 1916987740, 2108686514, 4217373028, 5271716285, 10543432570, 21086865140]

約数ペア:

[(1, 21086865140), (2, 10543432570), (4, 5271716285), (5, 4217373028), (10, 2108686514), (11, 1916987740), (20, 1054343257), (22, 958493870), (44, 479246935), (53, 397865380), (55, 383397548), (106, 198932690), (110, 191698774), (212, 99466345), (220, 95849387), (265, 79573076), (530, 39786538), (583, 36169580), (1060, 19893269), (1166, 18084790), (2332, 9042395), (2915, 7233916), (5830, 3616958), (11660, 1808479)]