OPM 2006 Problem 5
- Final day 2
Determine all the natural numbers such that exactly one fifth of the natural numbers are divisors of .
Dataset text AI-MO AoPS. Quoted with source.
Official text: Portuguese Mathematical Olympiad 2006 official paper, page 1.
Solutions
No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.
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