A:
Positive:
1 x 132110237 x 188728917 x 77711919 x 695317119 x 111017133 x 99331323 x 409012261 x 5843
Negative:
-1 x -13211023-7 x -1887289-17 x -777119-19 x -695317-119 x -111017-133 x -99331-323 x -40901-2261 x -5843
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 13,211,023, 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 | 13,211,023 | |
| -1 | -13,211,023 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,211,023.
Example:
1 x 13,211,023 = 13,211,023
and
-1 x -13,211,023 = 13,211,023
Notice both answers equal 13,211,023
With that explanation out of the way, let's continue. Next, we take the number 13,211,023 and divide it by 2:
13,211,023 ÷ 2 = 6,605,511.5
If the quotient is a whole number, then 2 and 6,605,511.5 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 | 13,211,023 | |
| -1 | -13,211,023 |
Now, we try dividing 13,211,023 by 3:
13,211,023 ÷ 3 = 4,403,674.3333
If the quotient is a whole number, then 3 and 4,403,674.3333 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 | 13,211,023 | |
| -1 | -13,211,023 |
Let's try dividing by 4:
13,211,023 ÷ 4 = 3,302,755.75
If the quotient is a whole number, then 4 and 3,302,755.75 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 | 13,211,023 | |
| -1 | 13,211,023 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 19 | 119 | 133 | 323 | 2,261 | 5,843 | 40,901 | 99,331 | 111,017 | 695,317 | 777,119 | 1,887,289 | 13,211,023 |
| -1 | -7 | -17 | -19 | -119 | -133 | -323 | -2,261 | -5,843 | -40,901 | -99,331 | -111,017 | -695,317 | -777,119 | -1,887,289 | -13,211,023 |
Here are some more numbers to try:
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