Factors / Factors of 61

Factors of 61

1, 61

61 is prime: only factor pair is (1, 61), confirmed by trial division up to √61 ≈ 7.8 turning up nothing else. 61's full pair list is (1, 61), for 2 divisors in total. 61's divisors other than 61 itself sum to just 1, 60 below 61: the common deficient case. 61 is odd, digit sum 7 for 61; none of 2-12 divide 61 evenly. 61 has 2 divisors; 60 has 12 and 62 has 4, so 60 wins here. 61 divided by its largest divisor, 1, gives 61.