20638604

素因数分解:

$2^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{3631}}^1$

素因数の和:3678

約数の個数: 36

約数和(自身を含む): 43475040

約数和(自身を除く): 22836436

約数列:

[1, 2, 4, 7, 14, 28, 29, 49, 58, 98, 116, 196, 203, 406, 812, 1421, 2842, 3631, 5684, 7262, 14524, 25417, 50834, 101668, 105299, 177919, 210598, 355838, 421196, 711676, 737093, 1474186, 2948372, 5159651, 10319302, 20638604]

約数ペア:

[(1, 20638604), (2, 10319302), (4, 5159651), (7, 2948372), (14, 1474186), (28, 737093), (29, 711676), (49, 421196), (58, 355838), (98, 210598), (116, 177919), (196, 105299), (203, 101668), (406, 50834), (812, 25417), (1421, 14524), (2842, 7262), (3631, 5684)]