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Let $f$ be a function defined on the positive integers, taking positive integral values, such that


$f(a)f(b) = f(ab)$ for all positive integers $a$ and $b$,

$f(a) < f(b)$ if $a < b$,

$f(3) \geq 7$.


Find the smallest possible value of $f(3)$.


Function  


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Attempt 20


Solve 11


First Solve mollamdkashem22