20028177

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2411}}^1$

素因数の和:2501

約数の個数: 24

約数和(自身を含む): 31606848

約数和(自身を除く): 11578671

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2411, 2769, 7233, 8307, 21699, 31343, 94029, 171181, 282087, 513543, 1540629, 2225353, 6676059, 20028177]

約数ペア:

[(1, 20028177), (3, 6676059), (9, 2225353), (13, 1540629), (39, 513543), (71, 282087), (117, 171181), (213, 94029), (639, 31343), (923, 21699), (2411, 8307), (2769, 7233)]