20817188

素因数分解:

$2^2\times 7^1\times {\mathrm{809}}^1\times {\mathrm{919}}^1$

素因数の和:1739

約数の個数: 24

約数和(自身を含む): 41731200

約数和(自身を除く): 20914012

約数列:

[1, 2, 4, 7, 14, 28, 809, 919, 1618, 1838, 3236, 3676, 5663, 6433, 11326, 12866, 22652, 25732, 743471, 1486942, 2973884, 5204297, 10408594, 20817188]

約数ペア:

[(1, 20817188), (2, 10408594), (4, 5204297), (7, 2973884), (14, 1486942), (28, 743471), (809, 25732), (919, 22652), (1618, 12866), (1838, 11326), (3236, 6433), (3676, 5663)]