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CONO-SUR 2025 Problem 2

    Dizemos que um par de inteiros positivos (n,m)(n,m) é minuano se ele cumpre as duas condições a seguir:

    • nn tem uma quantidade par de divisores positivos.
    • Se d1,d2,…,d2kd_1,d_2,\ldots,d_{2k} são todos os divisores positivos de nn, com 1=d1<d2<…<d2k=n1 = d_1 < d_2 < \ldots < d_{2k} = n, então todos os divisores positivos de mm são

    1,d1+d2,d3+d4,d5+d6,…,d2k−1+d2k.1, d_1 + d_2, d_3 + d_4, d_5 + d_6, \ldots, d_{2k-1} + d_{2k}.

    Encontre todos os pares minuanos.

    Official text Cono Sur Mathematical Olympiad 2025 official paper, page 1. 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.

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