# perfect number

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Related to perfect number: Amicable number

## perfect number

n.
A positive integer that is equal to the sum of its positive integral factors, including 1 but excluding itself.

## perfect number

n
(Mathematics) an integer, such as 28, that is equal to the sum of all its possible factors, excluding itself

## per′fect num′ber

n.
a positive number that is equal to the sum of all positive integers that are submultiples of it, as 6, which is equal to the sum of 1, 2, and 3.
[1350–1400]

## per·fect number

(pûr′fĭkt)
A positive integer that equals the sum of all of its divisors other than itself. An example is 28, whose divisors (not counting itself) are 1, 2, 4, 7, and 14, which added together give 28.
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References in periodicals archive ?
It was the perfect number of participants with a great bond developed throughout the week.
and the perfect number for security forces is 750," said the senior officer who spoke anonymously.
And, not to be missed, are the highly coveted Qatari plate numbers '97400' and '1218', the perfect number to display for National Day.
A Square number B Whole number C Rich number D Perfect number 2.
This year we're expecting about the same: it's the perfect number to keep the community feeling," Constantinos concludes.
Sanchez left Italy to shine at Barcelona before becoming a hit at the Emirates, and Guidolin said: "Gylfi is very important for me and the team and I hope to have the possibility to work with him in the future because, for me, he is the perfect number 10.
She says: "Two kids are a perfect number for me, although I always think of us as having eight children because all Rod's kids are so much a part of our lives, like a big extended family.
Wesley Sneijder and Deco are my perfect number 10s.
If a girl's name could be arranged, by choosing all or any part of it including initials, so that its number value is that of one of the pair, and if the boy's name could be written so that it has the number value of the other perfect number, their union would result in a perfect marriage.
Long ago, after a great deal of experimentation, research and practical application, I stumbled upon the perfect number of New Year's resolutions that actually stand a chance of surviving longer than a brat on a bowl-game grill--exactly one.
After a great deal of experimentation, research and application, I stumbled upon the perfect number of New Year's resolutions that actually stand a chance of surviving longer than a brat on a bowl-game grill--one.

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