3919981

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:252

約数の個数: 16

約数和(自身を含む): 4451328

約数和(自身を除く): 531347

約数列:

[1, 13, 31, 71, 137, 403, 923, 1781, 2201, 4247, 9727, 28613, 55211, 126451, 301537, 3919981]

約数ペア:

[(1, 3919981), (13, 301537), (31, 126451), (71, 55211), (137, 28613), (403, 9727), (923, 4247), (1781, 2201)]