You are viewing a single comment's thread. Return to all comments →
i did not understand: 65 0 :: For the first one, the only integers less than 65 for which sigma2(n) is a square are 1 and 42, hence the answer is 43.
plz. explain.
also give more test case
Seems like cookies are disabled on this browser, please enable them to open this website
Project Euler #211: Divisor Square Sum
You are viewing a single comment's thread. Return to all comments →
i did not understand: 65 0 :: For the first one, the only integers less than 65 for which sigma2(n) is a square are 1 and 42, hence the answer is 43.
plz. explain.
also give more test case