20804217

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{23039}}^1$

素因数の和:23092

約数の個数: 16

約数和(自身を含む): 32440320

約数和(自身を除く): 11636103

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 23039, 69117, 161273, 483819, 990677, 2972031, 6934739, 20804217]

約数ペア:

[(1, 20804217), (3, 6934739), (7, 2972031), (21, 990677), (43, 483819), (129, 161273), (301, 69117), (903, 23039)]