What is the smallest perfect number?
6
28
2
128
A perfect number is a positive integer that is equal to the sum of its proper positive divisors, excluding the number itself. Equivalently, a perfect number is a number that is half the sum of all of its positive divisors (including itself).
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Answers by country
6
28
2
128
answers
Australia
30
the Netherlands
17
Poland
2102
the United States
64
Switzerland
20
Pakistan
10
Canada
10
the United Kingdom
55
Germany
196
Austria
39
India
62