19688513

素因数分解:

${\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{257}}^1$

素因数の和:424

約数の個数: 16

約数和(自身を含む): 21845376

約数和(自身を除く): 2156863

約数列:

[1, 13, 71, 83, 257, 923, 1079, 3341, 5893, 18247, 21331, 76609, 237211, 277303, 1514501, 19688513]

約数ペア:

[(1, 19688513), (13, 1514501), (71, 277303), (83, 237211), (257, 76609), (923, 21331), (1079, 18247), (3341, 5893)]