The sequence of middle divisors is shown to be unbounded. For a given number n , 5=739753f670e5ac2e2d75f5bfae9997e8" title="Click to view the MathML source">an,0 is the number of divisors of n between 5=47ebd522fe49da69cab6195433ef381c"> and 5=1cfc6b0df4d115de6f4782435d8bcb96">. We explicitly construct a sequence of numbers 5=6183be41aed121fba2df0240effb6a43" title="Click to view the MathML source">n(i) and a list of divisors in the interesting range, so that the length of the list goes to infinity as i increases.
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