201977321

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{727}}^1$

素因数の和:861

約数の個数: 32

約数和(自身を含む): 258306048

約数和(自身を除く): 56328727

約数列:

[1, 7, 13, 43, 71, 91, 301, 497, 559, 727, 923, 3053, 3913, 5089, 6461, 9451, 21371, 31261, 39689, 51617, 66157, 218827, 277823, 361319, 406393, 671021, 2219531, 2844751, 4697147, 15536717, 28853903, 201977321]

約数ペア:

[(1, 201977321), (7, 28853903), (13, 15536717), (43, 4697147), (71, 2844751), (91, 2219531), (301, 671021), (497, 406393), (559, 361319), (727, 277823), (923, 218827), (3053, 66157), (3913, 51617), (5089, 39689), (6461, 31261), (9451, 21371)]