18663841

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^2\times {\mathrm{71}}^1$

素因数の和:189

約数の個数: 24

約数和(自身を含む): 23400576

約数和(自身を除く): 4736735

約数列:

[1, 7, 17, 47, 71, 119, 329, 497, 799, 1207, 2209, 3337, 5593, 8449, 15463, 23359, 37553, 56729, 156839, 262871, 397103, 1097873, 2666263, 18663841]

約数ペア:

[(1, 18663841), (7, 2666263), (17, 1097873), (47, 397103), (71, 262871), (119, 156839), (329, 56729), (497, 37553), (799, 23359), (1207, 15463), (2209, 8449), (3337, 5593)]