18394467

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 31200768

約数和(自身を除く): 12806301

約数列:

[1, 3, 7, 13, 21, 39, 71, 73, 91, 169, 213, 219, 273, 497, 507, 511, 923, 949, 1183, 1491, 1533, 2769, 2847, 3549, 5183, 6461, 6643, 11999, 12337, 15549, 19383, 19929, 35997, 36281, 37011, 67379, 83993, 86359, 108843, 202137, 251979, 259077, 471653, 875927, 1414959, 2627781, 6131489, 18394467]

約数ペア:

[(1, 18394467), (3, 6131489), (7, 2627781), (13, 1414959), (21, 875927), (39, 471653), (71, 259077), (73, 251979), (91, 202137), (169, 108843), (213, 86359), (219, 83993), (273, 67379), (497, 37011), (507, 36281), (511, 35997), (923, 19929), (949, 19383), (1183, 15549), (1491, 12337), (1533, 11999), (2769, 6643), (2847, 6461), (3549, 5183)]