20827179

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{17939}}^1$

素因数の和:17991

約数の個数: 16

約数和(自身を含む): 31574400

約数和(自身を除く): 10747221

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 17939, 53817, 161451, 484353, 771377, 2314131, 6942393, 20827179]

約数ペア:

[(1, 20827179), (3, 6942393), (9, 2314131), (27, 771377), (43, 484353), (129, 161451), (387, 53817), (1161, 17939)]