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25, 49, 81

To satisfy your criterion, you need the square of an odd number.

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10y ago

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Related Questions

What are the square numbers between 1 and 20?

The square numbers between 1 and 20 are 1,4,9 and 16.


What numbers are a factor of 20 and also factors of 30?

1, 2, 5 and 10.


If 20 is a factor of a numberwhat other numbers must also be factors of that number?

1,2,4,5,10


Is 20 a square number or not?

No. Square numbers (or perfect square numbers) are squares of integers. The perfect square numbers are 1, 4, 9, 16, 25, 36 ... 20 is not in the series.


What 2 numbers have LCM of 20 and HCF of 2?

2 and 20 have an HCF of 2 and an LCM of 20. You could also use 4 and 10.


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There are infinitely many numbers with 20 factors. yes there is


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4 and 9. Factors of numbers come in pairs which means that every number ought to have an even number of factors. To have an odd number of factors, one factor pair must be a repeated number which means that only square numbers have an odd number of factors. The square numbers less than 20 are 1, 4, 9 & 16 and of these 4 & 9 have 3 factors: 4: 1, 2 & 4 9: 1, 3 & 9


What are the factors of 20 that are not also factors of 12?

5, 10, and 20 are factors of 20 that are not also factors of 12.


Which factors of 20 are prime numbers?

The prime factors of 20 are 2, 2, and 5.


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All whole numbers between 1 and 400 (=20 square).


What numbers below 20 have 2 factors?

A number will always have 1 and itself as factors. And thus the only numbers with 2 factors will be prime numbers. The only prime numbers below 20 are 2, 3, 5, 7, 11, 13, 17 and 19, and thus these are the only numbers below 20 that have 2 factors.


A list of square numbers up to 200?

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