21252656

素因数分解:

$2^4\times {\mathrm{647}}^1\times {\mathrm{2053}}^1$

素因数の和:2708

約数の個数: 20

約数和(自身を含む): 41260752

約数和(自身を除く): 20008096

約数列:

[1, 2, 4, 8, 16, 647, 1294, 2053, 2588, 4106, 5176, 8212, 10352, 16424, 32848, 1328291, 2656582, 5313164, 10626328, 21252656]

約数ペア:

[(1, 21252656), (2, 10626328), (4, 5313164), (8, 2656582), (16, 1328291), (647, 32848), (1294, 16424), (2053, 10352), (2588, 8212), (4106, 5176)]