21559727

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{1747}}^1$

素因数の和:1838

約数の個数: 16

約数和(自身を含む): 25842432

約数和(自身を除く): 4282705

約数列:

[1, 7, 41, 43, 287, 301, 1747, 1763, 12229, 12341, 71627, 75121, 501389, 525847, 3079961, 21559727]

約数ペア:

[(1, 21559727), (7, 3079961), (41, 525847), (43, 501389), (287, 75121), (301, 71627), (1747, 12341), (1763, 12229)]