A:
Positive:
1 x 1288600313 x 99123123 x 56026171 x 181493299 x 43097607 x 21229923 x 139611633 x 7891
Negative:
-1 x -12886003-13 x -991231-23 x -560261-71 x -181493-299 x -43097-607 x -21229-923 x -13961-1633 x -7891
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 12,886,003, 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 | 12,886,003 | |
| -1 | -12,886,003 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,886,003.
Example:
1 x 12,886,003 = 12,886,003
and
-1 x -12,886,003 = 12,886,003
Notice both answers equal 12,886,003
With that explanation out of the way, let's continue. Next, we take the number 12,886,003 and divide it by 2:
12,886,003 ÷ 2 = 6,443,001.5
If the quotient is a whole number, then 2 and 6,443,001.5 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 | 12,886,003 | |
| -1 | -12,886,003 |
Now, we try dividing 12,886,003 by 3:
12,886,003 ÷ 3 = 4,295,334.3333
If the quotient is a whole number, then 3 and 4,295,334.3333 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 | 12,886,003 | |
| -1 | -12,886,003 |
Let's try dividing by 4:
12,886,003 ÷ 4 = 3,221,500.75
If the quotient is a whole number, then 4 and 3,221,500.75 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 | 12,886,003 | |
| -1 | 12,886,003 |
If you did it right, you will end up with this table:
| 1 | 13 | 23 | 71 | 299 | 607 | 923 | 1,633 | 7,891 | 13,961 | 21,229 | 43,097 | 181,493 | 560,261 | 991,231 | 12,886,003 |
| -1 | -13 | -23 | -71 | -299 | -607 | -923 | -1,633 | -7,891 | -13,961 | -21,229 | -43,097 | -181,493 | -560,261 | -991,231 | -12,886,003 |
Here are some more numbers to try:
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