20716040

素因数分解:

$2^3\times 5^1\times {\mathrm{517901}}^1$

素因数の和:517912

約数の個数: 16

約数和(自身を含む): 46611180

約数和(自身を除く): 25895140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 517901, 1035802, 2071604, 2589505, 4143208, 5179010, 10358020, 20716040]

約数ペア:

[(1, 20716040), (2, 10358020), (4, 5179010), (5, 4143208), (8, 2589505), (10, 2071604), (20, 1035802), (40, 517901)]