50,45,40,35,30,25,20,15,10,5
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5, 10, 15, 20, 25, 30, 35, 40, 45 and 50
50+50+50
it is equal
A perfect number is a positive integer that is equal to the sum of its proper divisors (excluding itself). The first four perfect numbers are 6, 28, 496, and 8128. These are the only known perfect numbers less than 50. Perfect numbers are rare and have special properties in number theory.
42.5 and 10.5 equal 53