Factors / Factors of 64

Factors of 64

1, 2, 4, 8, 16, 32, 64

64 is a perfect square (8² = 64); that gives 64 an odd 7-divisor count, since only 8 pairs with itself. 64's full pair list is (1, 64), (2, 32), (4, 16), (8, 8), for 7 divisors in total. 64's divisors other than 64 itself sum to just 63, 1 below 64: the common deficient case. 64 is even, digit sum 10 for 64; small divisors of 64 include 2, 4, 8. 64 has 7 divisors; 63 has 6 and 65 has 4, so 64 wins here. 64 divided by its largest divisor, 32, gives 2.