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Number Theory Level 4

A=∑d∣1729!μ2(d)ϕ(d),B=1729!ϕ(1729!)A=\sum_{d|1729!}\frac{\mu^2(d)}{\phi(d)}, \hspace {15 mm} B=\frac{1729!}{\phi(1729!)}

Find the relationship between AA and BB.

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Otto Bretscher by Otto Bretscher
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