20211895

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{21617}}^1$

素因数の和:21650

約数の個数: 16

約数和(自身を含む): 28016928

約数和(自身を除く): 7805033

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 21617, 108085, 237787, 367489, 1188935, 1837445, 4042379, 20211895]

約数ペア:

[(1, 20211895), (5, 4042379), (11, 1837445), (17, 1188935), (55, 367489), (85, 237787), (187, 108085), (935, 21617)]