20809581

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31387}}^1$

素因数の和:31420

約数の個数: 16

約数和(自身を含む): 31639104

約数和(自身を除く): 10829523

約数列:

[1, 3, 13, 17, 39, 51, 221, 663, 31387, 94161, 408031, 533579, 1224093, 1600737, 6936527, 20809581]

約数ペア:

[(1, 20809581), (3, 6936527), (13, 1600737), (17, 1224093), (39, 533579), (51, 408031), (221, 94161), (663, 31387)]