205721719

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{359}}^1\times {\mathrm{1153}}^1$

素因数の和:1590

約数の個数: 16

約数和(自身を含む): 239293440

約数和(自身を除く): 33571721

約数列:

[1, 7, 71, 359, 497, 1153, 2513, 8071, 25489, 81863, 178423, 413927, 573041, 2897489, 29388817, 205721719]

約数ペア:

[(1, 205721719), (7, 29388817), (71, 2897489), (359, 573041), (497, 413927), (1153, 178423), (2513, 81863), (8071, 25489)]