A:
Positive:
1 x 131499955 x 262999919 x 69210595 x 138421149 x 88255745 x 17651929 x 141552831 x 4645
Negative:
-1 x -13149995-5 x -2629999-19 x -692105-95 x -138421-149 x -88255-745 x -17651-929 x -14155-2831 x -4645
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 13,149,995, 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 | 13,149,995 | |
| -1 | -13,149,995 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,149,995.
Example:
1 x 13,149,995 = 13,149,995
and
-1 x -13,149,995 = 13,149,995
Notice both answers equal 13,149,995
With that explanation out of the way, let's continue. Next, we take the number 13,149,995 and divide it by 2:
13,149,995 ÷ 2 = 6,574,997.5
If the quotient is a whole number, then 2 and 6,574,997.5 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 | 13,149,995 | |
| -1 | -13,149,995 |
Now, we try dividing 13,149,995 by 3:
13,149,995 ÷ 3 = 4,383,331.6667
If the quotient is a whole number, then 3 and 4,383,331.6667 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 | 13,149,995 | |
| -1 | -13,149,995 |
Let's try dividing by 4:
13,149,995 ÷ 4 = 3,287,498.75
If the quotient is a whole number, then 4 and 3,287,498.75 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 | 13,149,995 | |
| -1 | 13,149,995 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 149 | 745 | 929 | 2,831 | 4,645 | 14,155 | 17,651 | 88,255 | 138,421 | 692,105 | 2,629,999 | 13,149,995 |
| -1 | -5 | -19 | -95 | -149 | -745 | -929 | -2,831 | -4,645 | -14,155 | -17,651 | -88,255 | -138,421 | -692,105 | -2,629,999 | -13,149,995 |
Here are some more numbers to try:
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