21000388672

素因数分解:

$2^6\times {\mathrm{193}}^1\times {\mathrm{1700161}}^1$

素因数の和:1700366

約数の個数: 28

約数和(自身を含む): 41888591356

約数和(自身を除く): 20888202684

約数列:

[1, 2, 4, 8, 16, 32, 64, 193, 386, 772, 1544, 3088, 6176, 12352, 1700161, 3400322, 6800644, 13601288, 27202576, 54405152, 108810304, 328131073, 656262146, 1312524292, 2625048584, 5250097168, 10500194336, 21000388672]

約数ペア:

[(1, 21000388672), (2, 10500194336), (4, 5250097168), (8, 2625048584), (16, 1312524292), (32, 656262146), (64, 328131073), (193, 108810304), (386, 54405152), (772, 27202576), (1544, 13601288), (3088, 6800644), (6176, 3400322), (12352, 1700161)]