Competition problem — Number theory

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Number theory Difficulty 5.2 AIME, harder Find the answer

3. Find the largest integer $n$ with $\lambda(n)=12$ .

Your answer

A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.

Solution

3. 65520

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Source: NuminaMath-1.5, licensed Apache-2.0. Statement and solution reproduced as published; topic and difficulty added by this site.