19724155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{5051}}^1$

素因数の和:5138

約数の個数: 16

約数和(自身を含む): 26189568

約数和(自身を除く): 6465413

約数列:

[1, 5, 11, 55, 71, 355, 781, 3905, 5051, 25255, 55561, 277805, 358621, 1793105, 3944831, 19724155]

約数ペア:

[(1, 19724155), (5, 3944831), (11, 1793105), (55, 358621), (71, 277805), (355, 55561), (781, 25255), (3905, 5051)]