Factors / Factors of 172

Factors of 172

1, 2, 4, 43, 86, 172

172 breaks into 3 pairs, tested up to √172 ≈ 13.1; each pair multiplies back to 172 exactly. 172's full pair list is (1, 172), (2, 86), (4, 43), for 6 divisors in total. 172's divisors other than 172 itself sum to just 136, 36 below 172: the common deficient case. 172 is even, digit sum 10 for 172; small divisors of 172 include 2, 4. 172 has 6 divisors; 171 has 6 and 173 has 2, so 171 wins here. 172 divided by its largest divisor, 86, gives 2.