A:
Positive:
1 x 2110130055 x 422026017 x 3014471535 x 60289431997 x 1056653019 x 698959985 x 2113313979 x 15095
Negative:
-1 x -211013005-5 x -42202601-7 x -30144715-35 x -6028943-1997 x -105665-3019 x -69895-9985 x -21133-13979 x -15095
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 211,013,005, 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 | 211,013,005 | |
| -1 | -211,013,005 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 211,013,005.
Example:
1 x 211,013,005 = 211,013,005
and
-1 x -211,013,005 = 211,013,005
Notice both answers equal 211,013,005
With that explanation out of the way, let's continue. Next, we take the number 211,013,005 and divide it by 2:
211,013,005 ÷ 2 = 105,506,502.5
If the quotient is a whole number, then 2 and 105,506,502.5 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 | 211,013,005 | |
| -1 | -211,013,005 |
Now, we try dividing 211,013,005 by 3:
211,013,005 ÷ 3 = 70,337,668.3333
If the quotient is a whole number, then 3 and 70,337,668.3333 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 | 211,013,005 | |
| -1 | -211,013,005 |
Let's try dividing by 4:
211,013,005 ÷ 4 = 52,753,251.25
If the quotient is a whole number, then 4 and 52,753,251.25 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 | 211,013,005 | |
| -1 | 211,013,005 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 1,997 | 3,019 | 9,985 | 13,979 | 15,095 | 21,133 | 69,895 | 105,665 | 6,028,943 | 30,144,715 | 42,202,601 | 211,013,005 |
| -1 | -5 | -7 | -35 | -1,997 | -3,019 | -9,985 | -13,979 | -15,095 | -21,133 | -69,895 | -105,665 | -6,028,943 | -30,144,715 | -42,202,601 | -211,013,005 |
Here are some more numbers to try:
Try the factor calculator