28112643

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:197

約数の個数: 48

約数和(自身を含む): 46291680

約数和(自身を除く): 18179037

約数列:

[1, 3, 9, 13, 27, 39, 61, 101, 117, 169, 183, 303, 351, 507, 549, 793, 909, 1313, 1521, 1647, 2379, 2727, 3939, 4563, 6161, 7137, 10309, 11817, 17069, 18483, 21411, 30927, 35451, 51207, 55449, 80093, 92781, 153621, 166347, 240279, 278343, 460863, 720837, 1041209, 2162511, 3123627, 9370881, 28112643]

約数ペア:

[(1, 28112643), (3, 9370881), (9, 3123627), (13, 2162511), (27, 1041209), (39, 720837), (61, 460863), (101, 278343), (117, 240279), (169, 166347), (183, 153621), (303, 92781), (351, 80093), (507, 55449), (549, 51207), (793, 35451), (909, 30927), (1313, 21411), (1521, 18483), (1647, 17069), (2379, 11817), (2727, 10309), (3939, 7137), (4563, 6161)]