20857538721

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{5749}}^1\times {\mathrm{17033}}^1$

素因数の和:22856

約数の個数: 16

約数和(自身を含む): 28208304000

約数和(自身を除く): 7350765279

約数列:

[1, 3, 71, 213, 5749, 17033, 17247, 51099, 408179, 1209343, 1224537, 3628029, 97922717, 293768151, 6952512907, 20857538721]

約数ペア:

[(1, 20857538721), (3, 6952512907), (71, 293768151), (213, 97922717), (5749, 3628029), (17033, 1224537), (17247, 1209343), (51099, 408179)]