A:
Positive:
1 x 131434037 x 187762913 x 101103191 x 14443397 x 135499679 x 193571261 x 104231489 x 8827
Negative:
-1 x -13143403-7 x -1877629-13 x -1011031-91 x -144433-97 x -135499-679 x -19357-1261 x -10423-1489 x -8827
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 13,143,403, 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 | 13,143,403 | |
| -1 | -13,143,403 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,143,403.
Example:
1 x 13,143,403 = 13,143,403
and
-1 x -13,143,403 = 13,143,403
Notice both answers equal 13,143,403
With that explanation out of the way, let's continue. Next, we take the number 13,143,403 and divide it by 2:
13,143,403 ÷ 2 = 6,571,701.5
If the quotient is a whole number, then 2 and 6,571,701.5 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 | 13,143,403 | |
| -1 | -13,143,403 |
Now, we try dividing 13,143,403 by 3:
13,143,403 ÷ 3 = 4,381,134.3333
If the quotient is a whole number, then 3 and 4,381,134.3333 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 | 13,143,403 | |
| -1 | -13,143,403 |
Let's try dividing by 4:
13,143,403 ÷ 4 = 3,285,850.75
If the quotient is a whole number, then 4 and 3,285,850.75 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 | 13,143,403 | |
| -1 | 13,143,403 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 97 | 679 | 1,261 | 1,489 | 8,827 | 10,423 | 19,357 | 135,499 | 144,433 | 1,011,031 | 1,877,629 | 13,143,403 |
| -1 | -7 | -13 | -91 | -97 | -679 | -1,261 | -1,489 | -8,827 | -10,423 | -19,357 | -135,499 | -144,433 | -1,011,031 | -1,877,629 | -13,143,403 |
Here are some more numbers to try:
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