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Find all numbers that are multiples of 2,3,5 and have 12 divisors.

 Mar 22, 2020
 #1
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I could find only 3 such multiples:

 

60 = (1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60) > 12 (divisors)

90 = (1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90) > 12 (divisors)

150 = (1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150) > 12 (divisors)

 Mar 22, 2020

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