Problem 52809. Easy Sequences 28: Sum of Radicals of Integers
The radical of a positive integer x is defined as the product of the distinct prime numbers dividing x. For example, the distinct prime factors of is , therefore the radical of is . Similarly, the radicals of , and are , 5 and , respectively, The number1is considered to be the radical of itself.
Given a limit n, find the sum of the radicals of all positive integers .
For , the radicals are: . Therefore, the output should be '41'.
Solution Stats
Problem Comments
Solution Comments
Show commentsProblem Recent Solvers8
Suggested Problems
-
2177 Solvers
-
How to find the position of an element in a vector without using the find function
2693 Solvers
-
Sort numbers by outside digits
145 Solvers
-
538 Solvers
-
Easy Sequences 23: Hat Guessing Game!
25 Solvers
More from this Author116
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!