18838809

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{139}}^1$

素因数の和:230

約数の個数: 36

約数和(自身を含む): 30728880

約数和(自身を除く): 11890071

約数列:

[1, 3, 9, 11, 33, 37, 99, 111, 139, 333, 407, 417, 1221, 1251, 1369, 1529, 3663, 4107, 4587, 5143, 12321, 13761, 15059, 15429, 45177, 46287, 56573, 135531, 169719, 190291, 509157, 570873, 1712619, 2093201, 6279603, 18838809]

約数ペア:

[(1, 18838809), (3, 6279603), (9, 2093201), (11, 1712619), (33, 570873), (37, 509157), (99, 190291), (111, 169719), (139, 135531), (333, 56573), (407, 46287), (417, 45177), (1221, 15429), (1251, 15059), (1369, 13761), (1529, 12321), (3663, 5143), (4107, 4587)]