A perfect number is a number whose divisors, excluding the number itself, add up to the number. 6 is a perfect number. The divisors of 6 are 1, 2, 3, and 6. Leaving the 6 out, the sum is 1+2+3=6. The second perfect number is 28: 1+2+4+7+14=28). The third perfect number is 496: 1+2+4+8+16+31+62+124+248. The next few perfect numbers are 8128, 33550336, 8589869056, 137438691328, 2305843008139952128.


This sections uses a program to generate perfect numbers. Click on the 'Generate' button to check one value to see if it is a perfect number. Click again to see the next, and so on. The results of the generation will appear below.
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