21242855

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{719}}^1$

素因数の和:1054

約数の個数: 16

約数和(自身を含む): 26956800

約数和(自身を除く): 5713945

約数列:

[1, 5, 19, 95, 311, 719, 1555, 3595, 5909, 13661, 29545, 68305, 223609, 1118045, 4248571, 21242855]

約数ペア:

[(1, 21242855), (5, 4248571), (19, 1118045), (95, 223609), (311, 68305), (719, 29545), (1555, 13661), (3595, 5909)]