20718711

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2903}}^1$

素因数の和:2983

約数の個数: 24

約数和(自身を含む): 32768736

約数和(自身を除く): 12050025

約数列:

[1, 3, 9, 13, 39, 61, 117, 183, 549, 793, 2379, 2903, 7137, 8709, 26127, 37739, 113217, 177083, 339651, 531249, 1593747, 2302079, 6906237, 20718711]

約数ペア:

[(1, 20718711), (3, 6906237), (9, 2302079), (13, 1593747), (39, 531249), (61, 339651), (117, 177083), (183, 113217), (549, 37739), (793, 26127), (2379, 8709), (2903, 7137)]