Factors / Factors of 22

Factors of 22

1, 2, 11, 22

22 breaks into 2 pairs, tested up to √22 ≈ 4.7; each pair multiplies back to 22 exactly. 22's full pair list is (1, 22), (2, 11), for 4 divisors in total. 22's divisors other than 22 itself sum to just 14, 8 below 22: the common deficient case. 22 is even, digit sum 4 for 22; small divisors of 22 include 2, 11. 22 has 4 divisors; 21 has 4 and 23 has 2, so 21 wins here. 22 divided by its largest divisor, 11, gives 2.