This is just the fixed payments that every side receives. There is then the marketpool - the PL having the biggest marketpool due to BT paying more than any other broadcaster. Marketpool payments will vary depending on a number of factors but worst case scenario, with the fixed payments, a PL side will receive €40m from winning the competition.It’s not what this says here max prize money €21.3m or £18m and that’s if you win every game you take part in....
edit: correction, Chelsea actually ended up getting €46m - again that was with Arsenal also making the final. They would have made more had Arsenal not progressed as far.
UEFA published the exact figures here: https://www.uefa.com/MultimediaFiles/Download/competitions/General/02/63/74/66/2637466_DOWNLOAD.pdf