18275859

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2087}}^1$

素因数の和:2239

約数の個数: 24

約数和(自身を含む): 30401280

約数和(自身を除く): 12125421

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2087, 2919, 6261, 8757, 14609, 18783, 43827, 131481, 290093, 870279, 2030651, 2610837, 6091953, 18275859]

約数ペア:

[(1, 18275859), (3, 6091953), (7, 2610837), (9, 2030651), (21, 870279), (63, 290093), (139, 131481), (417, 43827), (973, 18783), (1251, 14609), (2087, 8757), (2919, 6261)]