18328401

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:195

約数の個数: 72

約数和(自身を含む): 34856640

約数和(自身を除く): 16528239

約数列:

[1, 3, 7, 9, 13, 21, 23, 39, 49, 63, 69, 91, 117, 139, 147, 161, 207, 273, 299, 417, 441, 483, 637, 819, 897, 973, 1127, 1251, 1449, 1807, 1911, 2093, 2691, 2919, 3197, 3381, 5421, 5733, 6279, 6811, 8757, 9591, 10143, 12649, 14651, 16263, 18837, 20433, 22379, 28773, 37947, 41561, 43953, 61299, 67137, 88543, 113841, 124683, 131859, 156653, 201411, 265629, 290927, 374049, 469959, 796887, 872781, 1409877, 2036489, 2618343, 6109467, 18328401]

約数ペア:

[(1, 18328401), (3, 6109467), (7, 2618343), (9, 2036489), (13, 1409877), (21, 872781), (23, 796887), (39, 469959), (49, 374049), (63, 290927), (69, 265629), (91, 201411), (117, 156653), (139, 131859), (147, 124683), (161, 113841), (207, 88543), (273, 67137), (299, 61299), (417, 43953), (441, 41561), (483, 37947), (637, 28773), (819, 22379), (897, 20433), (973, 18837), (1127, 16263), (1251, 14651), (1449, 12649), (1807, 10143), (1911, 9591), (2093, 8757), (2691, 6811), (2919, 6279), (3197, 5733), (3381, 5421)]