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Thad Mitchell

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โˆ™ 2021-02-26 22:17:31
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โˆ™ 2011-06-24 18:58:01

A number is abundant if the sum of its factors is greater than twice the number.

So in the range given there are 3 and they are:

12, 18 & 20 as:

12 has factors of 1,12,2,6,3,4 which total 28. 28 > (2 * 12)

18 has factors of 1,18,2,9,3,6 which total 39. 39 > (2 * 18)

20 has factors of 1,20,2,10,4,5 which total 42. 42 > (2 * 20)

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Q: How many abundant numbers are there between 1 - 20?
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Related questions

What numbers between 2 and 30 are abundant?

12, 18, 20, 24, 30


What are the first five abundant numbers?

The first five abundant numbers are 12, 18, 20, 24, and 30.


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There are 69 odd numbers between 20 and 158.


How many odd numbers are there between 20 and 158?

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What is in between 20 and 40?

There are infinitely many numbers between 20 and 40.


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The numbers 23 and 29 are the only prime numbers between 20 and 30


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The three prime numbers between 20 and 35 are 23, 29, and 31.


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There are 3 composite numbers between 20 and 25. They are 21, 22, and 24.


How many odd numbers are between 20 and 100?

There are 40 odd numbers between 20 and 100. Remember that an odd number is every second number. There are 80 numbers between 20 and 100, so there are 40 odd numbers and 40 even numbers.


How many prime numbers are there between 10 and 20?

There are 4 prime numbers between 10 and 20. They are 11, 13, 17, and 19.


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There are 20 natural numbers between 32 and 53.


How many numbers between 2 and 20 are perfect squares?

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There are two prime numbers between 20 and 30 which are 23 and 29


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There are 9 prime numbers between 0 and 20: 1,2,3,5,7,11,13,17,19.


How many odd numbers are there between 20 and 50?

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There are eleven of them including 20


How many prime numbers between 1 and 20?

There are 8 prime numbers between 1 and 20. The numbers are 2, 3, 5, 7, 11, 13, 17, and 19.


How many numbers between 20 and 50 end 2 or 5?

six numbers


How many perfect numbers are in between 20 and 50?

The only perfect number between 20 and 50 is 28.


How many even numbers between 10 and 20?

the even numbers between 10 and 20 are :10,12,14,16,18,20 so there are 4 even numbers between 10 and 20 (without counting the 10 and 20 =)) i hope this helped u =)


How many composite numbers are there between 10 and 20 including 10 and 20?

10,12,14,15,16,18,20


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There are nine numbers between 10 and 20: 11, 12, 13, 14, 15, 16, 17, 18, and 19.


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Eight of them.


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7 of them.