18821889

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{10103}}^1$

素因数の和:10138

約数の個数: 20

約数和(自身を含む): 29342016

約数和(自身を除く): 10520127

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 10103, 30309, 90927, 232369, 272781, 697107, 818343, 2091321, 6273963, 18821889]

約数ペア:

[(1, 18821889), (3, 6273963), (9, 2091321), (23, 818343), (27, 697107), (69, 272781), (81, 232369), (207, 90927), (621, 30309), (1863, 10103)]