18711063

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{6907}}^1$

素因数の和:6963

約数の個数: 24

約数和(自身を含む): 31611008

約数和(自身を除く): 12899945

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 6907, 20721, 48349, 62163, 145047, 297001, 435141, 891003, 2079007, 2673009, 6237021, 18711063]

約数ペア:

[(1, 18711063), (3, 6237021), (7, 2673009), (9, 2079007), (21, 891003), (43, 435141), (63, 297001), (129, 145047), (301, 62163), (387, 48349), (903, 20721), (2709, 6907)]