Mikescher/www.mikescher.com
1
0
Fork 0
Code Actions Activity

rename statics/euler and sync b93 code with main repo

Browse Source
This commit is contained in:
Mike Schwörer
2017-11-20 17:38:54 +01:00
parent 0efeb3afeb
commit 69e3f51730
409 changed files with 745 additions and 509 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
www/statics/euler/Euler_Problem-023_description.md Normal file
View File

@@ -0,0 +1,7 @@
A perfect number is a number for which the sum of its proper divisors is exactly equal to the number. For example, the sum of the proper divisors of 28 would be 1 + 2 + 4 + 7 + 14 = 28, which means that 28 is a perfect number.
A number n is called deficient if the sum of its proper divisors is less than n and it is called abundant if this sum exceeds n.
As 12 is the smallest abundant number, 1 + 2 + 3 + 4 + 6 = 16, the smallest number that can be written as the sum of two abundant numbers is 24. By mathematical analysis, it can be shown that all integers greater than 28123 can be written as the sum of two abundant numbers. However, this upper limit cannot be reduced any further by analysis even though it is known that the greatest number that cannot be expressed as the sum of two abundant numbers is less than this limit.
Find the sum of all the positive integers which cannot be written as the sum of two abundant numbers.