18715491

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{3931}}^1$

素因数の和:3983

約数の個数: 18

約数和(自身を含む): 28267148

約数和(自身を除く): 9551657

約数列:

[1, 3, 9, 23, 69, 207, 529, 1587, 3931, 4761, 11793, 35379, 90413, 271239, 813717, 2079499, 6238497, 18715491]

約数ペア:

[(1, 18715491), (3, 6238497), (9, 2079499), (23, 813717), (69, 271239), (207, 90413), (529, 35379), (1587, 11793), (3931, 4761)]