A:
Positive:
1 x 1301917323 x 56605129 x 448937131 x 99383149 x 87377667 x 195193013 x 43213427 x 3799
Negative:
-1 x -13019173-23 x -566051-29 x -448937-131 x -99383-149 x -87377-667 x -19519-3013 x -4321-3427 x -3799
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 13,019,173, 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 | 13,019,173 | |
| -1 | -13,019,173 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,019,173.
Example:
1 x 13,019,173 = 13,019,173
and
-1 x -13,019,173 = 13,019,173
Notice both answers equal 13,019,173
With that explanation out of the way, let's continue. Next, we take the number 13,019,173 and divide it by 2:
13,019,173 ÷ 2 = 6,509,586.5
If the quotient is a whole number, then 2 and 6,509,586.5 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 | 13,019,173 | |
| -1 | -13,019,173 |
Now, we try dividing 13,019,173 by 3:
13,019,173 ÷ 3 = 4,339,724.3333
If the quotient is a whole number, then 3 and 4,339,724.3333 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 | 13,019,173 | |
| -1 | -13,019,173 |
Let's try dividing by 4:
13,019,173 ÷ 4 = 3,254,793.25
If the quotient is a whole number, then 4 and 3,254,793.25 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 | 13,019,173 | |
| -1 | 13,019,173 |
If you did it right, you will end up with this table:
| 1 | 23 | 29 | 131 | 149 | 667 | 3,013 | 3,427 | 3,799 | 4,321 | 19,519 | 87,377 | 99,383 | 448,937 | 566,051 | 13,019,173 |
| -1 | -23 | -29 | -131 | -149 | -667 | -3,013 | -3,427 | -3,799 | -4,321 | -19,519 | -87,377 | -99,383 | -448,937 | -566,051 | -13,019,173 |
Here are some more numbers to try:
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