heeeeeeeeelp math

How many ordered pairs of positive integers 1≤k≤n≤50 are there, such that k divides n, and (n/k )!= n!/k! ?

  1. 1
asked by andrew
  1. Hi Andrew. We will delete your Brilliant account if you continue to cheat using websites such as these.

    Thank you for cooperating,
    Calvin.

    posted by Calvin
  2. is it ? are you know my Brilliant Accout?
    hahaha freaking stupid threat

    posted by andrew

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