Factors / Factors of 478

Factors of 478

1, 2, 239, 478

478 breaks into 2 pairs, tested up to √478 ≈ 21.9; each pair multiplies back to 478 exactly. 478's full pair list is (1, 478), (2, 239), for 4 divisors in total. 478's divisors other than 478 itself sum to just 242, 236 below 478: the common deficient case. 478 is even, digit sum 19 for 478; small divisors of 478 include 2. 478 has 4 divisors; 477 has 6 and 479 has 2, so 477 wins here. 478 divided by its largest divisor, 239, gives 2.