0
1
4
9
16
25
36
49
64
81
100
121
144
169
196
225
256
289
324
361
400
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The above numbers are squares not perfect numbers. A perfect number n is one that is equal to the proper divisors of n. Here are the first few:
6
28
496
8128
33550336
8589869056
137438691328
2305843008139952128
2658455991569831744654692615953842176
191561942608236107294793378084303638130997321548169216
I don't know if more of them are known. For more information see oeis.org.
What else can I help you with?
What numbers are almost perfect from 5 and 20?
Almost perfect numbers are those that are one less than a perfect number. The perfect numbers between 5 and 20 are 6 and 28, with 6 being the only perfect number in this range. Therefore, the almost perfect number in this interval is 5, as it is one less than 6.
What are the perfect numbers between 1 and 20?
Just 6
What are the first 20 odd numbers?
The first 20 odd numbers are: 13579111315171921232527293133353739.
How many numbers between 20 and 30 are perfect square?
4
Is 495 a perfect number?
No, it isn't. In fact, it is not known whether are odd perfect numbers exist. The first perfect numbers are 6, 28, 496, and 8128.
Is 20 a perfect number in math?
No. In the first hundred numbers, there are only two perfect numbers: 6, and 28.
Perfect numbers between 20 and 30?
there are no perfect numbers instead there are perfect cubes, perfect squares, natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real numbers. If you want natural no. they are 21, 22, 23, 24, 25, 26, 27, 28, and 29.
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.
How many perfect numbers are in between 20 and 50?
The only perfect number between 20 and 50 is 28.
What numbers are perfect?
6, 28, 496 and 8128 are the first four Perfect numbers.
How many numbers between 2 and 20 are perfect squares?
Three numbers.
What numbers are almost perfect from 5 and 20?
Almost perfect numbers are those that are one less than a perfect number. The perfect numbers between 5 and 20 are 6 and 28, with 6 being the only perfect number in this range. Therefore, the almost perfect number in this interval is 5, as it is one less than 6.
What are some other perfect numbers?
Other than what? The first perfect numbers are 6 and 28.
Are any of the numbers from 2 to 5 perfect?
No. The first two "perfect numbers" are 6 and 28.
What are the perfect numbers between 1 and 20?
Just 6
What are the first 20 odd numbers?
The first 20 odd numbers are: 13579111315171921232527293133353739.
How many perfect square numbers between 1 to 1000 are?
There are 31 perfect square numbers between 1 and 1000 (including 1).
