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jmc

number theory intermediate

Problem

What is the smallest positive integer with exactly 14 positive divisors?
Solution
If the prime factorization of an integer is given as the number of divisors will be: So, we need to factor 14 in a similar manner to the expression above. We can write: The smallest integer in the first case will be , and the smallest in the second case will be . Therefore, is clearly the smallest positive integer with exactly 14 positive divisors.
Final answer
192