18131607

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{257}}^1$

素因数の和:349

約数の個数: 40

約数和(自身を含む): 29719536

約数和(自身を除く): 11587929

約数列:

[1, 3, 9, 13, 27, 39, 67, 81, 117, 201, 257, 351, 603, 771, 871, 1053, 1809, 2313, 2613, 3341, 5427, 6939, 7839, 10023, 17219, 20817, 23517, 30069, 51657, 70551, 90207, 154971, 223847, 270621, 464913, 671541, 1394739, 2014623, 6043869, 18131607]

約数ペア:

[(1, 18131607), (3, 6043869), (9, 2014623), (13, 1394739), (27, 671541), (39, 464913), (67, 270621), (81, 223847), (117, 154971), (201, 90207), (257, 70551), (351, 51657), (603, 30069), (771, 23517), (871, 20817), (1053, 17219), (1809, 10023), (2313, 7839), (2613, 6939), (3341, 5427)]