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MathNet 2023-part-01 — 191 problems (EN–VI) Question 48

Math Olympiad Vault · MathNet 2023-part-01 — 191 problems (EN–VI)

Question 48

Determine all pairs $(x, y)$ of positive integers such that for $d = \gcd(x, y)$ the equation
$$
xyd = x + y + d^2
$$
holds.