21007991521

素因数分解:

${\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1\times {\mathrm{193}}^1\times {\mathrm{1217}}^1$

素因数の和:1641

約数の個数: 32

約数和(自身を含む): 23682129408

約数和(自身を除く): 2674137887

約数列:

[1, 11, 47, 173, 193, 517, 1217, 1903, 2123, 8131, 9071, 13387, 33389, 57199, 89441, 99781, 210541, 234881, 367279, 629189, 1569283, 2315951, 2583691, 9895427, 11039407, 17262113, 40634413, 108849697, 121433477, 446978543, 1909817411, 21007991521]

約数ペア:

[(1, 21007991521), (11, 1909817411), (47, 446978543), (173, 121433477), (193, 108849697), (517, 40634413), (1217, 17262113), (1903, 11039407), (2123, 9895427), (8131, 2583691), (9071, 2315951), (13387, 1569283), (33389, 629189), (57199, 367279), (89441, 234881), (99781, 210541)]