21212741

素因数分解:

${\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{173}}^1$

素因数の和:412

約数の個数: 16

約数和(自身を含む): 23753088

約数和(自身を除く): 2540347

約数列:

[1, 11, 71, 157, 173, 781, 1727, 1903, 11147, 12283, 27161, 122617, 135113, 298771, 1928431, 21212741]

約数ペア:

[(1, 21212741), (11, 1928431), (71, 298771), (157, 135113), (173, 122617), (781, 27161), (1727, 12283), (1903, 11147)]