Factors / Factors of 8

Factors of 8

1, 2, 4, 8

8 breaks into 2 pairs, tested up to √8 ≈ 2.8; each pair multiplies back to 8 exactly. 8's full pair list is (1, 8), (2, 4), for 4 divisors in total. 8's divisors other than 8 itself sum to just 7, 1 below 8: the common deficient case. 8 is even, digit sum 8 for 8; small divisors of 8 include 2, 4. 8 has 4 divisors; 7 has 2 and 9 has 3, so 8 wins here. 8 divided by its largest divisor, 4, gives 2.