SOLUTION: what is the sum of all positive two-digit integers with exactly five positive integral factors
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Question 1132526: what is the sum of all positive two-digit integers with exactly five positive integral factors
Answer by ikleyn(52803) (Show Source): You can put this solution on YOUR website!
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what is the sum of all positive two-digit integers with exactly five positive integer factors
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If you mean " . . . with exactly five positive divisors",
then there are 2 and only two such numbers. They are
= 16 with the divisors 1, 2, 4, 8 and 16, and
= 81 with the divisors 1, 3, 9, 27 and 81.
The sum is 16 + 81, which you can easily calculate on your own.
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