78987429

素因数分解:

$3^2\times {\mathrm{71}}^2\times {\mathrm{1741}}^1$

素因数の和:1889

約数の個数: 18

約数和(自身を含む): 115788998

約数和(自身を除く): 36801569

約数列:

[1, 3, 9, 71, 213, 639, 1741, 5041, 5223, 15123, 15669, 45369, 123611, 370833, 1112499, 8776381, 26329143, 78987429]

約数ペア:

[(1, 78987429), (3, 26329143), (9, 8776381), (71, 1112499), (213, 370833), (639, 123611), (1741, 45369), (5041, 15669), (5223, 15123)]