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Maximum Face Sum in a Minimal Divisor Cube Labeling

Number Theory · 28th PMO Qualifying Stage 1750
Eight distinct positive divisors of 2025 are placed on the eight vertices of a cube such that, for every face, the product of the four corner labels is the same constant $K$. Among all such labelings, consider those configurations that minimize $K$. In such a configuration, what is the maximum sum of the four vertex labels on a single face?