Factorization
104 = 2 × 2 × 2 × 13
104 has 8 divisors: 1, 2, 4, 8, 13, 26, 52, 104
Sum of all divisors other than 104:
106
Sums & differences
Sum of 2 squares: 104 = 102 + 22
Difference of 2 squares: 104 = 152 - 112 = 272 - 252
Goldbach conjecture: 104 = 101 + 3 = 97 + 7 = 73 + 31 = 67 + 37 = 61 + 43