# Michael's Car

$\large a^m \equiv 1 \pmod n$

For every integer $$a$$ coprime to $$n$$, we define $$\lambda(n)$$ as the smallest integer $$m$$ such that the congruence above is fulfilled.

Evaluate $$\displaystyle{\sum_{i=1}^{10^6} \lambda(i)}$$.

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