28239777

素因数分解:

$3^2\times {\mathrm{43}}^2\times {\mathrm{1697}}^1$

素因数の和:1789

約数の個数: 18

約数和(自身を含む): 41786082

約数和(自身を除く): 13546305

約数列:

[1, 3, 9, 43, 129, 387, 1697, 1849, 5091, 5547, 15273, 16641, 72971, 218913, 656739, 3137753, 9413259, 28239777]

約数ペア:

[(1, 28239777), (3, 9413259), (9, 3137753), (43, 656739), (129, 218913), (387, 72971), (1697, 16641), (1849, 15273), (5091, 5547)]