19938575

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:367

約数の個数: 24

約数和(自身を含む): 25712640

約数和(自身を除く): 5774065

約数列:

[1, 5, 25, 47, 71, 235, 239, 355, 1175, 1195, 1775, 3337, 5975, 11233, 16685, 16969, 56165, 83425, 84845, 280825, 424225, 797543, 3987715, 19938575]

約数ペア:

[(1, 19938575), (5, 3987715), (25, 797543), (47, 424225), (71, 280825), (235, 84845), (239, 83425), (355, 56165), (1175, 16969), (1195, 16685), (1775, 11233), (3337, 5975)]