81444881

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 100159488

約数和(自身を除く): 18714607

約数列:

[1, 7, 37, 43, 71, 103, 259, 301, 497, 721, 1591, 2627, 3053, 3811, 4429, 7313, 11137, 18389, 21371, 26677, 31003, 51191, 112961, 163873, 270581, 314459, 790727, 1147111, 1894067, 2201213, 11634983, 81444881]

約数ペア:

[(1, 81444881), (7, 11634983), (37, 2201213), (43, 1894067), (71, 1147111), (103, 790727), (259, 314459), (301, 270581), (497, 163873), (721, 112961), (1591, 51191), (2627, 31003), (3053, 26677), (3811, 21371), (4429, 18389), (7313, 11137)]