A k-hyperperfect number is a natural number n for which the equality n = 1 + k(σ(n) − n − 1) holds, where σ(n) is the divisor function (i.e., the sum of all positive divisors of n).
%Example
sigma(6) = 1 + 2 + 3 + 6 = 12
%for k=1
1 + 1*(12-6-1) = 1 + 5 = 6
%Example
sigma(325) = 1 + 5 + 13 + 25 + 65 + 325 = 434
%for k=3
1 + 3*(434-325-1) = 1 + 3*108 = 324
Given a number x, return the xth Hyperperfect number (serial/order wise) and corresponding k value.
P.S - Check the test suite for banned functions. More functions might be added later to prevent hard coded solutions.
Solution Stats
Problem Comments
Solution Comments
Show comments
Loading...
Problem Recent Solvers3
Suggested Problems
-
Program an exclusive OR operation with logical operators
751 Solvers
-
Convert a vector into a number
616 Solvers
-
Is this triangle right-angled?
6590 Solvers
-
interesting center of magic matrix
111 Solvers
-
106 Solvers
More from this Author44
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!