Factorization
63940 = 2 × 2 × 5 × 23 × 139
63940 has 24 divisors: 1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 139, 230, 278, 460, 556, 695, 1390, 2780, 3197, 6394, 12788, 15985, 31970, 63940
Sum of all divisors other than 63940:
77180
Sums & differences
Difference of 2 squares: 63940 = 2542 - 242 = 7182 - 6722 = 32022 - 31922 = 159862 - 159842
Goldbach conjecture: 63940 = 63929 + 11 = 63857 + 83 = 63839 + 101 = 63809 + 131 = 63803 + 137 = 63773 + 167 = 63761 + 179 = 63743 + 197 = 63689 + 251 = 63671 + 269 = . . . (only the first 10 pairs are shown)
