A:
Positive:
1 x 132132077 x 188760189 x 148463127 x 104041167 x 79121623 x 21209889 x 148631169 x 11303
Negative:
-1 x -13213207-7 x -1887601-89 x -148463-127 x -104041-167 x -79121-623 x -21209-889 x -14863-1169 x -11303
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 13,213,207, 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 | 13,213,207 | |
| -1 | -13,213,207 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,213,207.
Example:
1 x 13,213,207 = 13,213,207
and
-1 x -13,213,207 = 13,213,207
Notice both answers equal 13,213,207
With that explanation out of the way, let's continue. Next, we take the number 13,213,207 and divide it by 2:
13,213,207 ÷ 2 = 6,606,603.5
If the quotient is a whole number, then 2 and 6,606,603.5 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 | 13,213,207 | |
| -1 | -13,213,207 |
Now, we try dividing 13,213,207 by 3:
13,213,207 ÷ 3 = 4,404,402.3333
If the quotient is a whole number, then 3 and 4,404,402.3333 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 | 13,213,207 | |
| -1 | -13,213,207 |
Let's try dividing by 4:
13,213,207 ÷ 4 = 3,303,301.75
If the quotient is a whole number, then 4 and 3,303,301.75 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 | 13,213,207 | |
| -1 | 13,213,207 |
If you did it right, you will end up with this table:
| 1 | 7 | 89 | 127 | 167 | 623 | 889 | 1,169 | 11,303 | 14,863 | 21,209 | 79,121 | 104,041 | 148,463 | 1,887,601 | 13,213,207 |
| -1 | -7 | -89 | -127 | -167 | -623 | -889 | -1,169 | -11,303 | -14,863 | -21,209 | -79,121 | -104,041 | -148,463 | -1,887,601 | -13,213,207 |
Here are some more numbers to try:
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