20688620

素因数分解:

$2^2\times 5^1\times {\mathrm{709}}^1\times {\mathrm{1459}}^1$

素因数の和:2177

約数の個数: 24

約数和(自身を含む): 43537200

約数和(自身を除く): 22848580

約数列:

[1, 2, 4, 5, 10, 20, 709, 1418, 1459, 2836, 2918, 3545, 5836, 7090, 7295, 14180, 14590, 29180, 1034431, 2068862, 4137724, 5172155, 10344310, 20688620]

約数ペア:

[(1, 20688620), (2, 10344310), (4, 5172155), (5, 4137724), (10, 2068862), (20, 1034431), (709, 29180), (1418, 14590), (1459, 14180), (2836, 7295), (2918, 7090), (3545, 5836)]