20640473

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{1459}}^1$

素因数の和:1556

約数の個数: 16

約数和(自身を含む): 24668160

約数和(自身を除く): 4027687

約数列:

[1, 7, 43, 47, 301, 329, 1459, 2021, 10213, 14147, 62737, 68573, 439159, 480011, 2948639, 20640473]

約数ペア:

[(1, 20640473), (7, 2948639), (43, 480011), (47, 439159), (301, 68573), (329, 62737), (1459, 14147), (2021, 10213)]