Manuals/calci/PERFECTNUMBERS

PERFECTNUMBERS (Upto,StartFrom)

• $Upto$ is the maximum number limit.
• $StartFrom$ is the minimum number limit.

Description

• This function returns the list of Perfect numbers.
• In PERFECTNUMBERS (Upto,StartFrom),Upto is the Maximum number limit to display and Start from is the Minimum number to start Perfect number list.
• Perfect number is a positive integer which is equal to the sum of its proper divisors.
• The smallest perfect number is 6, which is the sum of 1, 2, and 3.

Examples

1. PERFECTNUMBERS(14,2) = 6
2. PERFECTNUMBERS(900,54) = 6 28 496
3. PERFECTNUMBERS(-567,0) = NaN

See Also

• SUM
• AVERAGE
• AVERAGEA

References

[Perfect number]

• List of Main Z Functions

• Z3 home