I have noticed that in many Wikipedia articles, the stellar flux received by each planet is stated. I tried to calculate this stellar flux from the given data, but the results didn't seem to be correct. For example, it is stated that exoplanet 55 Cancri e has a stellar flux of 2590 times that of the Earth. It has twice the radius of the Earth and semi-major axis of 0.0156 AU. Its star has 0.57 solar luminosity.
By using all these numbers, I can calculate that this planet should have a stellar flux of about 9300 times that of the Earth, which is not even close to the stated flux in the Wikipedia page.
So am I doing something wrong ? And how was the 2590 number calculated in the first place ?