I think you mean ancestors.
According to WikiTree, jjust as point of reference I apparently have 130 lines of descent from William the Conqueror, the shortest of which is 28 generations. This based on my paternal side only.
I don’t know how many descendants he has, but saw one estimate that he could have 50,000,000 in the US alone.
Looking at Charlemagne, which is back another couple of hundred years, and an ancestor of William, I apparently have over 22,000 lines of descent.
In the 20th generation back a person has, theoretically, over 500,000 ancestors.
So, with these kinds of numbers, descent from (remote) royalty is a pretty common occurrence.
Caveat: many of these lines of descent are of unknown confidence.