A:
Positive:
1 x 21113100717 x 1241947123 x 9179609197 x 1071731391 x 5399772741 x 770273349 x 630434531 x 46597
Negative:
-1 x -211131007-17 x -12419471-23 x -9179609-197 x -1071731-391 x -539977-2741 x -77027-3349 x -63043-4531 x -46597
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 211,131,007, 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 | 211,131,007 | |
| -1 | -211,131,007 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 211,131,007.
Example:
1 x 211,131,007 = 211,131,007
and
-1 x -211,131,007 = 211,131,007
Notice both answers equal 211,131,007
With that explanation out of the way, let's continue. Next, we take the number 211,131,007 and divide it by 2:
211,131,007 ÷ 2 = 105,565,503.5
If the quotient is a whole number, then 2 and 105,565,503.5 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 | 211,131,007 | |
| -1 | -211,131,007 |
Now, we try dividing 211,131,007 by 3:
211,131,007 ÷ 3 = 70,377,002.3333
If the quotient is a whole number, then 3 and 70,377,002.3333 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 | 211,131,007 | |
| -1 | -211,131,007 |
Let's try dividing by 4:
211,131,007 ÷ 4 = 52,782,751.75
If the quotient is a whole number, then 4 and 52,782,751.75 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 | 211,131,007 | |
| -1 | 211,131,007 |
If you did it right, you will end up with this table:
| 1 | 17 | 23 | 197 | 391 | 2,741 | 3,349 | 4,531 | 46,597 | 63,043 | 77,027 | 539,977 | 1,071,731 | 9,179,609 | 12,419,471 | 211,131,007 |
| -1 | -17 | -23 | -197 | -391 | -2,741 | -3,349 | -4,531 | -46,597 | -63,043 | -77,027 | -539,977 | -1,071,731 | -9,179,609 | -12,419,471 | -211,131,007 |
Here are some more numbers to try:
Try the factor calculator