- Is 16 an abundant number?
- Is 20 an abundant number?
- What is the smallest abundant number?
- IS 280 a perfect number?
- Can a prime number be abundant?
- Is 25 abundant deficient or perfect?
- Is 95 abundant or deficient?
- Is 6 a deficient number?
- Is 6 a perfect number?
- Is 70 an abundant number?
- Is 21 a deficient number?
- IS 144 a perfect number?

## Is 16 an abundant number?

Finding Abundant Numbers If the sum of the proper factors is greater than your actual number, then the number is considered to be an abundant number.

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The number 16 is greater than the number 12, so 12 is an abundant number..

## Is 20 an abundant number?

Examples of Abundant Numbers 12, 18, 20, 24, 30, 36, 40, 42, 48, 54, 56, 60, 66, 70, 72, 78, 80, 84, 88, 90, 96, 100. In fact, the first 60 abundant numbers are all even numbers! But this does not mean that all abundant numbers are even numbers.

## What is the smallest abundant number?

In number theory, an abundant number or excessive number is a number that is smaller than the sum of its proper divisors. The integer 12 is the first abundant number. Its proper divisors are 1, 2, 3, 4 and 6 for a total of 16.

## IS 280 a perfect number?

For 280, the answer is: No, 280 is not a prime number. The list of all positive divisors (i.e., the list of all integers that divide 280) is as follows: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280.

## Can a prime number be abundant?

Prime numbers are not abundant. Every number greater than 20161 can be expressed as a sum of two abundant numbers.

## Is 25 abundant deficient or perfect?

The Integers 1 to 100NDivisors of NNotes251, 5, 25Deficient261, 2, 13, 26Deficient271, 3, 9, 27Deficient281, 2, 4, 7, 14, 28Perfect65 more rows

## Is 95 abundant or deficient?

Yes, 95 is a deficient number, that is to say 95 is a natural number that is strictly larger than the sum of its proper divisors, i.e., the divisors of 95 without 95 itself (that is 1 + 5 + 19 = 25).

## Is 6 a deficient number?

The Greeks discovered, for example, that some numbers are equal to the sum of their divisors; for instance, 6 is equal to the sum of its proper divisors 3, 2, and 1. … Numbers like 8, whose proper divisors have a sum that is less than the number itself, are called deficient or defective.

## Is 6 a perfect number?

Perfect number, a positive integer that is equal to the sum of its proper divisors. The smallest perfect number is 6, which is the sum of 1, 2, and 3. Other perfect numbers are 28, 496, and 8,128.

## Is 70 an abundant number?

In fact, 70 is an abundant number; 70 is strictly smaller than the sum of its proper divisors (that is 1 + 2 + 5 + 7 + 10 + 14 + 35 = 74). The smallest abundant number is 12.

## Is 21 a deficient number?

Because 11 is less than 21, the number 21 is deficient. Its deficiency is 2 × 21 − 32 = 10.

## IS 144 a perfect number?

144 is a perfect square, sure, but the sum of its digits is also a perfect square (9), the product of its digits is also a perfect square (16), and its reverse is also a perfect square (441). … 144 can be written as the sum of two twin primes, namely 71 and 73.