BALTIC-WAY 2025 Problem 17
A positive integer is called brilliant if its positive divisors can be partitioned into two sets with an equal number of elements and an equal sum of elements.
Find all possible values of the number of positive divisors of a brilliant number.
Official text Baltic Way 2025 official paper, page 2. Quoted with source.
A model read this text from the scan of the paper by OCR, with vision/local (GLM-OCR-8bit). No person has checked it against the paper yet.
Solutions
No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.
Similar problems
These problems have the most words in common with this statement.