Factorization
13880 = 2 × 2 × 2 × 5 × 347
13880 has 16 divisors: 1, 2, 4, 5, 8, 10, 20, 40, 347, 694, 1388, 1735, 2776, 3470, 6940, 13880
Sum of all divisors other than 13880:
17440
Sums & differences
Difference of 2 squares: 13880 = 3572 - 3372 = 6992 - 6892 = 17372 - 17332 = 34712 - 34692
Goldbach conjecture: 13880 = 13877 + 3 = 13873 + 7 = 13807 + 73 = 13729 + 151 = 13723 + 157 = 13687 + 193 = 13681 + 199 = 13669 + 211 = 13597 + 283 = 13567 + 313 = . . . (only the first 10 pairs are shown)
