20287851

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{1999}}^1$

素因数の和:2218

約数の個数: 16

約数和(自身を含む): 28800000

約数和(自身を除く): 8512149

約数列:

[1, 3, 17, 51, 199, 597, 1999, 3383, 5997, 10149, 33983, 101949, 397801, 1193403, 6762617, 20287851]

約数ペア:

[(1, 20287851), (3, 6762617), (17, 1193403), (51, 397801), (199, 101949), (597, 33983), (1999, 10149), (3383, 5997)]