18929781

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{17977}}^1$

素因数の和:18002

約数の個数: 20

約数和(自身を含む): 30454732

約数和(自身を除く): 11524951

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 17977, 53931, 161793, 233701, 485379, 701103, 1456137, 2103309, 6309927, 18929781]

約数ペア:

[(1, 18929781), (3, 6309927), (9, 2103309), (13, 1456137), (27, 701103), (39, 485379), (81, 233701), (117, 161793), (351, 53931), (1053, 17977)]