A:
Positive:
1 x 2611885437 x 3731264911 x 2374441377 x 3392059121 x 2158583401 x 651343769 x 339647847 x 3083692807 x 930494411 x 592135383 x 485218459 x 30877
Negative:
-1 x -261188543-7 x -37312649-11 x -23744413-77 x -3392059-121 x -2158583-401 x -651343-769 x -339647-847 x -308369-2807 x -93049-4411 x -59213-5383 x -48521-8459 x -30877
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 261,188,543, 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 | 261,188,543 | |
| -1 | -261,188,543 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 261,188,543.
Example:
1 x 261,188,543 = 261,188,543
and
-1 x -261,188,543 = 261,188,543
Notice both answers equal 261,188,543
With that explanation out of the way, let's continue. Next, we take the number 261,188,543 and divide it by 2:
261,188,543 ÷ 2 = 130,594,271.5
If the quotient is a whole number, then 2 and 130,594,271.5 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 | 261,188,543 | |
| -1 | -261,188,543 |
Now, we try dividing 261,188,543 by 3:
261,188,543 ÷ 3 = 87,062,847.6667
If the quotient is a whole number, then 3 and 87,062,847.6667 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 | 261,188,543 | |
| -1 | -261,188,543 |
Let's try dividing by 4:
261,188,543 ÷ 4 = 65,297,135.75
If the quotient is a whole number, then 4 and 65,297,135.75 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 | 261,188,543 | |
| -1 | 261,188,543 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 121 | 401 | 769 | 847 | 2,807 | 4,411 | 5,383 | 8,459 | 30,877 | 48,521 | 59,213 | 93,049 | 308,369 | 339,647 | 651,343 | 2,158,583 | 3,392,059 | 23,744,413 | 37,312,649 | 261,188,543 |
| -1 | -7 | -11 | -77 | -121 | -401 | -769 | -847 | -2,807 | -4,411 | -5,383 | -8,459 | -30,877 | -48,521 | -59,213 | -93,049 | -308,369 | -339,647 | -651,343 | -2,158,583 | -3,392,059 | -23,744,413 | -37,312,649 | -261,188,543 |
Here are some more numbers to try:
Try the factor calculator