21715137

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1999}}^1$

素因数の和:2093

約数の個数: 24

約数和(自身を含む): 33696000

約数和(自身を除く): 11980863

約数列:

[1, 3, 9, 17, 51, 71, 153, 213, 639, 1207, 1999, 3621, 5997, 10863, 17991, 33983, 101949, 141929, 305847, 425787, 1277361, 2412793, 7238379, 21715137]

約数ペア:

[(1, 21715137), (3, 7238379), (9, 2412793), (17, 1277361), (51, 425787), (71, 305847), (153, 141929), (213, 101949), (639, 33983), (1207, 17991), (1999, 10863), (3621, 5997)]