18708003

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{3253}}^1$

素因数の和:3336

約数の個数: 20

約数和(自身を含む): 28348848

約数和(自身を除く): 9640845

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 3253, 5751, 9759, 29277, 87831, 230963, 263493, 692889, 2078667, 6236001, 18708003]

約数ペア:

[(1, 18708003), (3, 6236001), (9, 2078667), (27, 692889), (71, 263493), (81, 230963), (213, 87831), (639, 29277), (1917, 9759), (3253, 5751)]