Perfect Number

JavaScriptHardnumbersmathvalidation

Instructions

Create a function that tests whether or not an integer is a perfect number. A perfect number is a number that can be written as the sum of its factors, (equal to sum of its proper divisors) excluding the number itself.

For example, 6 is a perfect number, since 1 + 2 + 3 = 6, where 1, 2, and 3 are all factors of 6. Similarly, 28 is a perfect number, since 1 + 2 + 4 + 7 + 14 = 28.

Examples

checkPerfect(6) ➞ true

checkPerfect(28) ➞ true

checkPerfect(496) ➞ true

checkPerfect(12) ➞ false

checkPerfect(97) ➞ false

Notes

N/A

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Walks through the solution with reasoning and edge cases.

Next: Number of Two or More Consecutive Ones →