Difference between revisions of "Abundant number"
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=Examples= | =Examples= | ||
The first 10 abundant numbers are: | The first 10 abundant numbers are: | ||
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12, 18, 20, 24, 30, 36, 40, 42, 48, and 54 | 12, 18, 20, 24, 30, 36, 40, 42, 48, and 54 | ||
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The first 10 odd abundant numbers are: | The first 10 odd abundant numbers are: | ||
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945, 1575, 2205, 2835, 3465, 4095, 4725, 5355, 5775, and 5985 | 945, 1575, 2205, 2835, 3465, 4095, 4725, 5355, 5775, and 5985 | ||
{{stub}} | {{stub}} | ||
Revision as of 19:56, 6 February 2018
An abundant number is a number 
for which the sum of its proper divisors is greater than itself. For example, 12 is abundant because the sum of its proper divisors is 1 + 2 + 3 + 4 + 6 = 16 > 12.
Examples
The first 10 abundant numbers are:
12, 18, 20, 24, 30, 36, 40, 42, 48, and 54
The first 10 odd abundant numbers are:
945, 1575, 2205, 2835, 3465, 4095, 4725, 5355, 5775, and 5985
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