A:
Positive:
1 x 1867378919 x 98283137 x 504697101 x 184889263 x 71003703 x 265631919 x 97313737 x 4997
Negative:
-1 x -18673789-19 x -982831-37 x -504697-101 x -184889-263 x -71003-703 x -26563-1919 x -9731-3737 x -4997
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 18,673,789, it is easier to work with a table - it's called factoring from the outside in.
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 | 18,673,789 | |
| -1 | -18,673,789 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,673,789.
Example:
1 x 18,673,789 = 18,673,789
and
-1 x -18,673,789 = 18,673,789
Notice both answers equal 18,673,789
With that explanation out of the way, let's continue. Next, we take the number 18,673,789 and divide it by 2:
18,673,789 ÷ 2 = 9,336,894.5
If the quotient is a whole number, then 2 and 9,336,894.5 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 | 18,673,789 | |
| -1 | -18,673,789 |
Now, we try dividing 18,673,789 by 3:
18,673,789 ÷ 3 = 6,224,596.3333
If the quotient is a whole number, then 3 and 6,224,596.3333 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 | 18,673,789 | |
| -1 | -18,673,789 |
Let's try dividing by 4:
18,673,789 ÷ 4 = 4,668,447.25
If the quotient is a whole number, then 4 and 4,668,447.25 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 | 18,673,789 | |
| -1 | 18,673,789 |
If you did it right, you will end up with this table:
| 1 | 19 | 37 | 101 | 263 | 703 | 1,919 | 3,737 | 4,997 | 9,731 | 26,563 | 71,003 | 184,889 | 504,697 | 982,831 | 18,673,789 |
| -1 | -19 | -37 | -101 | -263 | -703 | -1,919 | -3,737 | -4,997 | -9,731 | -26,563 | -71,003 | -184,889 | -504,697 | -982,831 | -18,673,789 |
Here are some more numbers to try:
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