Factors / Factors of 5

Factors of 5

1, 5

5 is prime: only factor pair is (1, 5), confirmed by trial division up to √5 ≈ 2.2 turning up nothing else. 5's full pair list is (1, 5), for 2 divisors in total. 5's divisors other than 5 itself sum to just 1, 4 below 5: the common deficient case. 5 is odd, digit sum 5 for 5; none of 2-12 divide 5 evenly. 5 has 2 divisors; 4 has 3 and 6 has 4, so 6 wins here. 5 divided by its largest divisor, 1, gives 5.