A:
Positive:
1 x 2130186737 x 3043123971 x 3000263113 x 1885121497 x 428609791 x 2693033793 x 561618023 x 26551
Negative:
-1 x -213018673-7 x -30431239-71 x -3000263-113 x -1885121-497 x -428609-791 x -269303-3793 x -56161-8023 x -26551
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 213,018,673, 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 | 213,018,673 | |
| -1 | -213,018,673 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 213,018,673.
Example:
1 x 213,018,673 = 213,018,673
and
-1 x -213,018,673 = 213,018,673
Notice both answers equal 213,018,673
With that explanation out of the way, let's continue. Next, we take the number 213,018,673 and divide it by 2:
213,018,673 ÷ 2 = 106,509,336.5
If the quotient is a whole number, then 2 and 106,509,336.5 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 | 213,018,673 | |
| -1 | -213,018,673 |
Now, we try dividing 213,018,673 by 3:
213,018,673 ÷ 3 = 71,006,224.3333
If the quotient is a whole number, then 3 and 71,006,224.3333 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 | 213,018,673 | |
| -1 | -213,018,673 |
Let's try dividing by 4:
213,018,673 ÷ 4 = 53,254,668.25
If the quotient is a whole number, then 4 and 53,254,668.25 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 | 213,018,673 | |
| -1 | 213,018,673 |
If you did it right, you will end up with this table:
| 1 | 7 | 71 | 113 | 497 | 791 | 3,793 | 8,023 | 26,551 | 56,161 | 269,303 | 428,609 | 1,885,121 | 3,000,263 | 30,431,239 | 213,018,673 |
| -1 | -7 | -71 | -113 | -497 | -791 | -3,793 | -8,023 | -26,551 | -56,161 | -269,303 | -428,609 | -1,885,121 | -3,000,263 | -30,431,239 | -213,018,673 |
Here are some more numbers to try:
Try the factor calculator