Factors / Factors of 79

Factors of 79

1, 79

79 is prime: only factor pair is (1, 79), confirmed by trial division up to √79 ≈ 8.9 turning up nothing else. 79's full pair list is (1, 79), for 2 divisors in total. 79's divisors other than 79 itself sum to just 1, 78 below 79: the common deficient case. 79 is odd, digit sum 16 for 79; none of 2-12 divide 79 evenly. 79 has 2 divisors; 78 has 8 and 80 has 10, so 80 wins here. 79 divided by its largest divisor, 1, gives 79.