Factorization
194 = 2 × 97
194 has 4 divisors: 1, 2, 97, 194
Sum of all divisors other than 194:
100
Sums & differences
Sum of 2 squares: 194 = 132 + 52
Goldbach conjecture: 194 = 191 + 3 = 181 + 13 = 163 + 31 = 157 + 37 = 151 + 43 = 127 + 67 = 97 + 97
