Problem 53119. Easy Sequences 53: Greatest Proper Divisor
The greatest proper divisor (
) of an integer x is the largest integer y, such that
and
. Furthermore, we define:
.
Below is the set of
's of numbers from 1 to
:
Given an integer n, create a function that outputs the sum of
's of all integers from 1 to n, inclusive. For
, your function should return,
.
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Problem Comments
-
1 Comment
GeeTwo
on 30 Jun 2023
Really is an easy one! Solved the single cases in an hour, another hour to speed it up enough for the multiple cases.
Also, why is my solution showing up as if it were the first submitted?
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