Given any set of 6 numbers it is easy to find a rule based on a polynomial of order 5 such that the polynomial generates those numbers. There are infinitely many polynomials of orders 6, 7, 8 etc and also non-polynomial answers.
One possible answer, out of these infinite possibilities is
Un = (4n5 - 37n4 + 663 + 2415n2 - 730n + 456)/24 for n = 1, 2, 3, ...
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These are all the whole numbers that go into 190 evenly: 1, 2, 5, 10, 19, 38, 95, 190.
Any multiple of 19 has 19 as a factor.
1 and 19.
1 x 190, 2 x 95, 5 x 38, 10 x 19, 19 x 10, 38 x 5, 95 x 2, 190 x 1
The greatest common factor (GCF) of two numbers is the largest number that divides both numbers without leaving a remainder. In this case, the numbers 19 and 38 have a GCF of 19. This is because 19 is a prime number and the only common factor of 19 and 38. Therefore, the GCF of 19 and 38 is 19.