Q: What are the factor combinations of the number 18,499,999?

 A:
Positive:   1 x 184999997 x 264285729 x 63793147 x 39361749 x 377551203 x 91133277 x 66787329 x 562311363 x 135731421 x 130191939 x 95412303 x 8033
Negative: -1 x -18499999-7 x -2642857-29 x -637931-47 x -393617-49 x -377551-203 x -91133-277 x -66787-329 x -56231-1363 x -13573-1421 x -13019-1939 x -9541-2303 x -8033


How do I find the factor combinations of the number 18,499,999?

Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 18,499,999, it is easier to work with a table - it's called factoring from the outside in.

Outside in Factoring

We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.

1 18,499,999
-1 -18,499,999

Why are the negative numbers included?

When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,499,999.

Example:
1 x 18,499,999 = 18,499,999
and
-1 x -18,499,999 = 18,499,999
Notice both answers equal 18,499,999

With that explanation out of the way, let's continue. Next, we take the number 18,499,999 and divide it by 2:

18,499,999 ÷ 2 = 9,249,999.5

If the quotient is a whole number, then 2 and 9,249,999.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 18,499,999
-1 -18,499,999

Now, we try dividing 18,499,999 by 3:

18,499,999 ÷ 3 = 6,166,666.3333

If the quotient is a whole number, then 3 and 6,166,666.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 18,499,999
-1 -18,499,999

Let's try dividing by 4:

18,499,999 ÷ 4 = 4,624,999.75

If the quotient is a whole number, then 4 and 4,624,999.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 18,499,999
-1 18,499,999
Keep dividing by the next highest number until you cannot divide anymore.

If you did it right, you will end up with this table:

172947492032773291,3631,4211,9392,3038,0339,54113,01913,57356,23166,78791,133377,551393,617637,9312,642,85718,499,999
-1-7-29-47-49-203-277-329-1,363-1,421-1,939-2,303-8,033-9,541-13,019-13,573-56,231-66,787-91,133-377,551-393,617-637,931-2,642,857-18,499,999

More Examples

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