28220423

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1277}}^1$

素因数の和:1343

約数の個数: 24

約数和(自身を含む): 36714384

約数和(自身を除く): 8493961

約数列:

[1, 7, 11, 41, 49, 77, 287, 451, 539, 1277, 2009, 3157, 8939, 14047, 22099, 52357, 62573, 98329, 366499, 575927, 688303, 2565493, 4031489, 28220423]

約数ペア:

[(1, 28220423), (7, 4031489), (11, 2565493), (41, 688303), (49, 575927), (77, 366499), (287, 98329), (451, 62573), (539, 52357), (1277, 22099), (2009, 14047), (3157, 8939)]