20915380

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{36061}}^1$

素因数の和:36099

約数の個数: 24

約数和(自身を含む): 45438120

約数和(自身を除く): 24522740

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 36061, 72122, 144244, 180305, 360610, 721220, 1045769, 2091538, 4183076, 5228845, 10457690, 20915380]

約数ペア:

[(1, 20915380), (2, 10457690), (4, 5228845), (5, 4183076), (10, 2091538), (20, 1045769), (29, 721220), (58, 360610), (116, 180305), (145, 144244), (290, 72122), (580, 36061)]