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
-
7467 Solvers
-
288 Solvers
-
1060 Solvers
-
106 Solvers
-
Compute LOG(1+X) in natural log
264 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!