21248667

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3023}}^1$

素因数の和:3111

約数の個数: 24

約数和(自身を含む): 33965568

約数和(自身を除く): 12716901

約数列:

[1, 3, 9, 11, 33, 71, 99, 213, 639, 781, 2343, 3023, 7029, 9069, 27207, 33253, 99759, 214633, 299277, 643899, 1931697, 2360963, 7082889, 21248667]

約数ペア:

[(1, 21248667), (3, 7082889), (9, 2360963), (11, 1931697), (33, 643899), (71, 299277), (99, 214633), (213, 99759), (639, 33253), (781, 27207), (2343, 9069), (3023, 7029)]