21789700

素因数分解:

$2^2\times 5^2\times {\mathrm{193}}^1\times {\mathrm{1129}}^1$

素因数の和:1336

約数の個数: 36

約数和(自身を含む): 47570740

約数和(自身を除く): 25781040

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 193, 386, 772, 965, 1129, 1930, 2258, 3860, 4516, 4825, 5645, 9650, 11290, 19300, 22580, 28225, 56450, 112900, 217897, 435794, 871588, 1089485, 2178970, 4357940, 5447425, 10894850, 21789700]

約数ペア:

[(1, 21789700), (2, 10894850), (4, 5447425), (5, 4357940), (10, 2178970), (20, 1089485), (25, 871588), (50, 435794), (100, 217897), (193, 112900), (386, 56450), (772, 28225), (965, 22580), (1129, 19300), (1930, 11290), (2258, 9650), (3860, 5645), (4516, 4825)]