18780707

素因数分解:

${\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1$

素因数の和:394

約数の個数: 16

約数和(自身を含む): 21047040

約数和(自身を除く): 2266333

約数列:

[1, 11, 71, 139, 173, 781, 1529, 1903, 9869, 12283, 24047, 108559, 135113, 264517, 1707337, 18780707]

約数ペア:

[(1, 18780707), (11, 1707337), (71, 264517), (139, 135113), (173, 108559), (781, 24047), (1529, 12283), (1903, 9869)]