A:
Positive:
1 x 21301303329 x 734527737 x 575710967 x 31792991073 x 1985211943 x 1096312479 x 859272963 x 71891
Negative:
-1 x -213013033-29 x -7345277-37 x -5757109-67 x -3179299-1073 x -198521-1943 x -109631-2479 x -85927-2963 x -71891
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 213,013,033, 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 | 213,013,033 | |
| -1 | -213,013,033 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 213,013,033.
Example:
1 x 213,013,033 = 213,013,033
and
-1 x -213,013,033 = 213,013,033
Notice both answers equal 213,013,033
With that explanation out of the way, let's continue. Next, we take the number 213,013,033 and divide it by 2:
213,013,033 ÷ 2 = 106,506,516.5
If the quotient is a whole number, then 2 and 106,506,516.5 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 | 213,013,033 | |
| -1 | -213,013,033 |
Now, we try dividing 213,013,033 by 3:
213,013,033 ÷ 3 = 71,004,344.3333
If the quotient is a whole number, then 3 and 71,004,344.3333 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 | 213,013,033 | |
| -1 | -213,013,033 |
Let's try dividing by 4:
213,013,033 ÷ 4 = 53,253,258.25
If the quotient is a whole number, then 4 and 53,253,258.25 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 | 213,013,033 | |
| -1 | 213,013,033 |
If you did it right, you will end up with this table:
| 1 | 29 | 37 | 67 | 1,073 | 1,943 | 2,479 | 2,963 | 71,891 | 85,927 | 109,631 | 198,521 | 3,179,299 | 5,757,109 | 7,345,277 | 213,013,033 |
| -1 | -29 | -37 | -67 | -1,073 | -1,943 | -2,479 | -2,963 | -71,891 | -85,927 | -109,631 | -198,521 | -3,179,299 | -5,757,109 | -7,345,277 | -213,013,033 |
Here are some more numbers to try:
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