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Perfect Number : Mathematics
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In mathematics, a perfect number is defined as a positive integer which is the sum of its proper positive divisors, that is, the sum of the positive divisors not including the number itself. Equivalently, a perfect number is a number that is half the sum of all of its positive divisors
http://www.google.com/search?hl=en&q=Perfect+Numbe
created by syam1224 on 2008-04-23 01:32:19
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Perfect Number from Mathworld
Perfect numbers were deemed to have important numerological properties by the ancients, and were extensively studied by the Greeks, including Euclid.
http://mathworld.wolfram.com/PerfectNumber.html
created by syam1224 on 2008-04-23 01:39:54
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Perfect number from Wikipedia
In mathematics, a perfect number is defined as a positive integer which is the sum of its proper positive divisors, that is, the sum of the positive divisors not including the number itself.
http://en.wikipedia.org/wiki/Perfect_number
created by syam1224 on 2008-04-23 01:33:42
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Perfect numbers History
It is not known when perfect numbers were first studied and indeed the first studies may go back to the earliest times when numbers first aroused curiosity. It is quite likely, although not certain, that the Egyptians would have come across such numbers naturally given the way their methods of calculation worked, see for example [17] where detailed justification for this idea is given.
http://www-groups.dcs.st-and.ac.uk/~history/HistTo
created by syam1224 on 2008-04-23 01:36:24
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