18228903

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:164

約数の個数: 64

約数和(自身を含む): 32735232

約数和(自身を除く): 14506329

約数列:

[1, 3, 7, 11, 21, 23, 33, 47, 69, 73, 77, 141, 161, 219, 231, 253, 329, 483, 511, 517, 759, 803, 987, 1081, 1533, 1551, 1679, 1771, 2409, 3243, 3431, 3619, 5037, 5313, 5621, 7567, 10293, 10857, 11753, 11891, 16863, 18469, 22701, 24017, 35259, 35673, 37741, 55407, 72051, 78913, 83237, 113223, 129283, 236739, 249711, 264187, 387849, 552391, 792561, 868043, 1657173, 2604129, 6076301, 18228903]

約数ペア:

[(1, 18228903), (3, 6076301), (7, 2604129), (11, 1657173), (21, 868043), (23, 792561), (33, 552391), (47, 387849), (69, 264187), (73, 249711), (77, 236739), (141, 129283), (161, 113223), (219, 83237), (231, 78913), (253, 72051), (329, 55407), (483, 37741), (511, 35673), (517, 35259), (759, 24017), (803, 22701), (987, 18469), (1081, 16863), (1533, 11891), (1551, 11753), (1679, 10857), (1771, 10293), (2409, 7567), (3243, 5621), (3431, 5313), (3619, 5037)]