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What are the divisors of 28?
The divisors of 28 are: 1, 2, 4, 7, 14, 28.
What are perfect divisors?
An example - the divisors of 28 are 1 -2 - 4 - 7 - 14 and 28. In other words 1+2+4+7+14 = 28
Are 4 and 7 divisors of 28?
Yes
Divisor of 28?
28 has six divisors: 1, 2, 4, 7, 14, 28.
What are the 3 divisors of 56?
Actually, 56 has eight divisors: 1, 2, 4, 7, 8, 14, 28, 56.
What am I if I am a two digit number between 10 and 40 and the sum of all my divisors?
15
Common divisor OF 28 AND 42?
1, 2, 7, and 14 are common divisors (and common factors) of 28 and 42.
Is the number 14 a abundant perfect or deficient number?
14 is deficient. It is less than the sum of it's divisors. In mathematics, a deficient number or defective number is a number n for which σ(n) < 2n. Here σ(n) is the sum-of-divisors function: the sum of all positive divisors of n, including n itself Proof.. divisors of 14 are 1,2, and 7 and 14. Now, 2n=28 and and the sum the all the divisors including 14 is 24<28
How is 20 a perfect number?
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, 141 + 2 + 4 + 7 + 14 = 28 => 28 is a perfect number.
What are the divisors of 280?
The divisors of 280 are: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280.
What are all of the divisors of 56?
They are: 1, 2, 4, 7, 8, 14, 28, 56.
What is the perfect number and what is the perfect number after six?
A perfect number is a number, which, when adding all of its proper divisors (all divisors except himself) give the number itself Divisors of 6: 1,2,3 ------>1+2+3=6 The next proper number is 28 Divisors of 28:1,2,4,7,14 -------> 1+2+4+7+14=28 All perfect numbers found so far are found using this formula: 2^(p-1)*((2^p)-1), where p, and ((2^p)-1) are prime numbers
