18723717

素因数分解:

$3^4\times {\mathrm{139}}^1\times {\mathrm{1663}}^1$

素因数の和:1814

約数の個数: 20

約数和(自身を含む): 28188160

約数和(自身を除く): 9464443

約数列:

[1, 3, 9, 27, 81, 139, 417, 1251, 1663, 3753, 4989, 11259, 14967, 44901, 134703, 231157, 693471, 2080413, 6241239, 18723717]

約数ペア:

[(1, 18723717), (3, 6241239), (9, 2080413), (27, 693471), (81, 231157), (139, 134703), (417, 44901), (1251, 14967), (1663, 11259), (3753, 4989)]