20564019

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{7591}}^1$

素因数の和:7647

約数の個数: 24

約数和(自身を含む): 34740992

約数和(自身を除く): 14176973

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 7591, 22773, 53137, 68319, 159411, 326413, 478233, 979239, 2284891, 2937717, 6854673, 20564019]

約数ペア:

[(1, 20564019), (3, 6854673), (7, 2937717), (9, 2284891), (21, 979239), (43, 478233), (63, 326413), (129, 159411), (301, 68319), (387, 53137), (903, 22773), (2709, 7591)]