Factors / Factors of 155

Factors of 155

1, 5, 31, 155

155 breaks into 2 pairs, tested up to √155 ≈ 12.4; each pair multiplies back to 155 exactly. 155's full pair list is (1, 155), (5, 31), for 4 divisors in total. 155's divisors other than 155 itself sum to just 37, 118 below 155: the common deficient case. 155 is odd, digit sum 11 for 155; small divisors of 155 include 5. 155 has 4 divisors; 154 has 8 and 156 has 12, so 156 wins here. 155 divided by its largest divisor, 31, gives 5.