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למה 1 לא נחשב מספר משוכלל? הרי המחלק היחיד שלו זה 1, והסכום הוא 1

 Jul 16, 2020
 #1
avatar+601 
+6

what's an elaborate number?

 Jul 16, 2020
 #2
avatar+1154 
+2

Translated:

 

Why 1 is not considered an elaborate number? After all, its only divisor is 1, and the sum is 1
 Jul 16, 2020
 #3
avatar+1154 
+1

But what's an elaborate number?

jimkey17  Jul 16, 2020
 #4
avatar+111232 
-2

I think the translation should be 'perfect number'

 

Perfect number,

a positive integer that is equal to the sum of its proper divisors.

The smallest perfect number is 6, which is the sum of 1, 2, and 3. Other perfect numbers are 28, 496, and 8,128.

 

(copied from Google)

Melody  Jul 17, 2020
edited by Melody  Jul 17, 2020

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