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It isn't a perfect number.
A perfect number is a number which is the sum of its proper divisors (including 1, but excluding itself).
The divisors of 20 are 1, 2, 4, 5, 10.
1 + 2 + 4 + 5 + 10 = 22 => 20 is not a perfect number.
An example of a perfect number is 28:
The divisors of 28 are 1, 2, 4, 7, 14
1 + 2 + 4 + 7 + 14 = 28 => 28 is a perfect number.
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∙ 13y ago
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Is the number 20 a perfect square?
20 is a not perfect square.
Is there a perfect number between 20 and 30?
28 is a perfect number.
Is 20 an abundant deficient or perfect number?
Abundent
Is 20 a perfect square number?
No, it is not. 4x4=16; 5x5=25 20=4x5
What are the perfect number less than 100?
300+20+8 is 10 less than what number
Is the number 20 a perfect square?
20 is a not perfect square.
Is there a perfect number between 20 and 30?
28 is a perfect number.
Is the number a perfect square?
20 is a not perfect square.
Is 20 a perfect number?
No it is not. The closest perfect number to it is 28. The divisors of 20 are 1,2,4,5,10 those add up to more than 20 so 20 is an abundant number.
How many perfect numbers are in between 20 and 50?
The only perfect number between 20 and 50 is 28.
How do you find the perfect number between 20 and 30?
The number is 28.
Is the number 20 deficient perfect or abundant?
abundant
Is 20 an abundant deficient or perfect number?
Abundent
Is 20 a perfect square number?
No, it is not. 4x4=16; 5x5=25 20=4x5
Is 20 a perfect number in math?
No. In the first hundred numbers, there are only two perfect numbers: 6, and 28.
A perfect number between 20-30?
It is 28 I did that at school in year 6
What are the perfect number less than 100?
300+20+8 is 10 less than what number
