20685021

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{22907}}^1$

素因数の和:22960

約数の個数: 16

約数和(自身を含む): 32254464

約数和(自身を除く): 11569443

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 22907, 68721, 160349, 481047, 985001, 2955003, 6895007, 20685021]

約数ペア:

[(1, 20685021), (3, 6895007), (7, 2955003), (21, 985001), (43, 481047), (129, 160349), (301, 68721), (903, 22907)]