ISL 2023 N1
Determine all positive, composite integers that satisfy the following property: if the positive divisors of are , then divides for every . (Colombia)
Official text Transcription from NuminaMath olympiads, checked word for word against the official paper. Quoted with source.
Official text: IMO 2023 Shortlist booklet, page 11.
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n=p^{r}
Solutions
Official solution Solution 1 by the IMO Problem Selection Committee
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