20216855

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1531}}^1$

素因数の和:1694

約数の個数: 16

約数和(自身を含む): 25737600

約数和(自身を除く): 5520745

約数列:

[1, 5, 19, 95, 139, 695, 1531, 2641, 7655, 13205, 29089, 145445, 212809, 1064045, 4043371, 20216855]

約数ペア:

[(1, 20216855), (5, 4043371), (19, 1064045), (95, 212809), (139, 145445), (695, 29089), (1531, 13205), (2641, 7655)]