19938919

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19919}}^1$

素因数の和:19950

約数の個数: 16

約数和(自身を含む): 26772480

約数和(自身を除く): 6833561

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 19919, 139433, 219109, 258947, 1533763, 1812629, 2848417, 19938919]

約数ペア:

[(1, 19938919), (7, 2848417), (11, 1812629), (13, 1533763), (77, 258947), (91, 219109), (143, 139433), (1001, 19919)]