A:
Positive:
1 x 21060706711 x 1914609717 x 1238865123 x 9156829187 x 1126241253 x 832439391 x 538637529 x 3981232129 x 989234301 x 489675819 x 361938993 x 23419
Negative:
-1 x -210607067-11 x -19146097-17 x -12388651-23 x -9156829-187 x -1126241-253 x -832439-391 x -538637-529 x -398123-2129 x -98923-4301 x -48967-5819 x -36193-8993 x -23419
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 210,607,067, 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 | 210,607,067 | |
| -1 | -210,607,067 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 210,607,067.
Example:
1 x 210,607,067 = 210,607,067
and
-1 x -210,607,067 = 210,607,067
Notice both answers equal 210,607,067
With that explanation out of the way, let's continue. Next, we take the number 210,607,067 and divide it by 2:
210,607,067 ÷ 2 = 105,303,533.5
If the quotient is a whole number, then 2 and 105,303,533.5 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 | 210,607,067 | |
| -1 | -210,607,067 |
Now, we try dividing 210,607,067 by 3:
210,607,067 ÷ 3 = 70,202,355.6667
If the quotient is a whole number, then 3 and 70,202,355.6667 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 | 210,607,067 | |
| -1 | -210,607,067 |
Let's try dividing by 4:
210,607,067 ÷ 4 = 52,651,766.75
If the quotient is a whole number, then 4 and 52,651,766.75 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 | 210,607,067 | |
| -1 | 210,607,067 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 23 | 187 | 253 | 391 | 529 | 2,129 | 4,301 | 5,819 | 8,993 | 23,419 | 36,193 | 48,967 | 98,923 | 398,123 | 538,637 | 832,439 | 1,126,241 | 9,156,829 | 12,388,651 | 19,146,097 | 210,607,067 |
| -1 | -11 | -17 | -23 | -187 | -253 | -391 | -529 | -2,129 | -4,301 | -5,819 | -8,993 | -23,419 | -36,193 | -48,967 | -98,923 | -398,123 | -538,637 | -832,439 | -1,126,241 | -9,156,829 | -12,388,651 | -19,146,097 | -210,607,067 |
Here are some more numbers to try:
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