A:
Positive:
1 x 2103122355 x 420624477 x 3004460519 x 1106906535 x 600892195 x 2213813133 x 1581295665 x 316259
Negative:
-1 x -210312235-5 x -42062447-7 x -30044605-19 x -11069065-35 x -6008921-95 x -2213813-133 x -1581295-665 x -316259
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 210,312,235, 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 | 210,312,235 | |
| -1 | -210,312,235 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 210,312,235.
Example:
1 x 210,312,235 = 210,312,235
and
-1 x -210,312,235 = 210,312,235
Notice both answers equal 210,312,235
With that explanation out of the way, let's continue. Next, we take the number 210,312,235 and divide it by 2:
210,312,235 ÷ 2 = 105,156,117.5
If the quotient is a whole number, then 2 and 105,156,117.5 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 | 210,312,235 | |
| -1 | -210,312,235 |
Now, we try dividing 210,312,235 by 3:
210,312,235 ÷ 3 = 70,104,078.3333
If the quotient is a whole number, then 3 and 70,104,078.3333 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 | 210,312,235 | |
| -1 | -210,312,235 |
Let's try dividing by 4:
210,312,235 ÷ 4 = 52,578,058.75
If the quotient is a whole number, then 4 and 52,578,058.75 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 | 210,312,235 | |
| -1 | 210,312,235 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 19 | 35 | 95 | 133 | 665 | 316,259 | 1,581,295 | 2,213,813 | 6,008,921 | 11,069,065 | 30,044,605 | 42,062,447 | 210,312,235 |
| -1 | -5 | -7 | -19 | -35 | -95 | -133 | -665 | -316,259 | -1,581,295 | -2,213,813 | -6,008,921 | -11,069,065 | -30,044,605 | -42,062,447 | -210,312,235 |
Here are some more numbers to try:
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