Factors / Factors of 77

Factors of 77

1, 7, 11, 77

77 breaks into 2 pairs, tested up to √77 ≈ 8.8; each pair multiplies back to 77 exactly. 77's full pair list is (1, 77), (7, 11), for 4 divisors in total. 77's divisors other than 77 itself sum to just 19, 58 below 77: the common deficient case. 77 is odd, digit sum 14 for 77; small divisors of 77 include 7, 11. 77 has 4 divisors; 76 has 6 and 78 has 8, so 78 wins here. 77 divided by its largest divisor, 11, gives 7.