20871650

素因数分解:

$2^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{4133}}^1$

素因数の和:4246

約数の個数: 24

約数和(自身を含む): 39215124

約数和(自身を除く): 18343474

約数列:

[1, 2, 5, 10, 25, 50, 101, 202, 505, 1010, 2525, 4133, 5050, 8266, 20665, 41330, 103325, 206650, 417433, 834866, 2087165, 4174330, 10435825, 20871650]

約数ペア:

[(1, 20871650), (2, 10435825), (5, 4174330), (10, 2087165), (25, 834866), (50, 417433), (101, 206650), (202, 103325), (505, 41330), (1010, 20665), (2525, 8266), (4133, 5050)]