Donaldson R F Perfect Number Checker
A perfect number equals the sum of its own divisors (excluding itself). Check any number, or list the first few.
The first four perfect numbers are 6, 28, 496, and 8128 — quite rare! (6 = 1+2+3, 28 = 1+2+4+7+14)
A perfect number equals the sum of its own divisors (excluding itself). Check any number, or list the first few.
The first four perfect numbers are 6, 28, 496, and 8128 — quite rare! (6 = 1+2+3, 28 = 1+2+4+7+14)