21340556

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{2341}}^1$

素因数の和:2441

約数の個数: 24

約数和(自身を含む): 38952144

約数和(自身を除く): 17611588

約数列:

[1, 2, 4, 43, 53, 86, 106, 172, 212, 2279, 2341, 4558, 4682, 9116, 9364, 100663, 124073, 201326, 248146, 402652, 496292, 5335139, 10670278, 21340556]

約数ペア:

[(1, 21340556), (2, 10670278), (4, 5335139), (43, 496292), (53, 402652), (86, 248146), (106, 201326), (172, 124073), (212, 100663), (2279, 9364), (2341, 9116), (4558, 4682)]