Factors / Factors of 435

Factors of 435

1, 3, 5, 15, 29, 87, 145, 435

435 breaks into 4 pairs, tested up to √435 ≈ 20.9; each pair multiplies back to 435 exactly. 435's full pair list is (1, 435), (3, 145), (5, 87), (15, 29), for 8 divisors in total. 435's divisors other than 435 itself sum to just 285, 150 below 435: the common deficient case. 435 is odd, digit sum 12 for 435; small divisors of 435 include 3, 5. 435 has 8 divisors; 434 has 8 and 436 has 6, so 434 wins here. 435 divided by its largest divisor, 145, gives 3.