A:
Positive:
1 x 2100433097 x 3000618719 x 11054911133 x 1579273241 x 8715491687 x 1245074579 x 458716553 x 32053
Negative:
-1 x -210043309-7 x -30006187-19 x -11054911-133 x -1579273-241 x -871549-1687 x -124507-4579 x -45871-6553 x -32053
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 210,043,309, 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 | 210,043,309 | |
| -1 | -210,043,309 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 210,043,309.
Example:
1 x 210,043,309 = 210,043,309
and
-1 x -210,043,309 = 210,043,309
Notice both answers equal 210,043,309
With that explanation out of the way, let's continue. Next, we take the number 210,043,309 and divide it by 2:
210,043,309 ÷ 2 = 105,021,654.5
If the quotient is a whole number, then 2 and 105,021,654.5 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 | 210,043,309 | |
| -1 | -210,043,309 |
Now, we try dividing 210,043,309 by 3:
210,043,309 ÷ 3 = 70,014,436.3333
If the quotient is a whole number, then 3 and 70,014,436.3333 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 | 210,043,309 | |
| -1 | -210,043,309 |
Let's try dividing by 4:
210,043,309 ÷ 4 = 52,510,827.25
If the quotient is a whole number, then 4 and 52,510,827.25 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 | 210,043,309 | |
| -1 | 210,043,309 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 133 | 241 | 1,687 | 4,579 | 6,553 | 32,053 | 45,871 | 124,507 | 871,549 | 1,579,273 | 11,054,911 | 30,006,187 | 210,043,309 |
| -1 | -7 | -19 | -133 | -241 | -1,687 | -4,579 | -6,553 | -32,053 | -45,871 | -124,507 | -871,549 | -1,579,273 | -11,054,911 | -30,006,187 | -210,043,309 |
Here are some more numbers to try:
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