Factors / Factors of 71

Factors of 71

1, 71

71 is prime: only factor pair is (1, 71), confirmed by trial division up to √71 ≈ 8.4 turning up nothing else. 71's full pair list is (1, 71), for 2 divisors in total. 71's divisors other than 71 itself sum to just 1, 70 below 71: the common deficient case. 71 is odd, digit sum 8 for 71; none of 2-12 divide 71 evenly. 71 has 2 divisors; 70 has 8 and 72 has 12, so 72 wins here. 71 divided by its largest divisor, 1, gives 71.