A:
Positive:
1 x 22108753941 x 539237953 x 417146371 x 31139091433 x 1542832173 x 1017432911 x 759493763 x 58753
Negative:
-1 x -221087539-41 x -5392379-53 x -4171463-71 x -3113909-1433 x -154283-2173 x -101743-2911 x -75949-3763 x -58753
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 221,087,539, 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 | 221,087,539 | |
| -1 | -221,087,539 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 221,087,539.
Example:
1 x 221,087,539 = 221,087,539
and
-1 x -221,087,539 = 221,087,539
Notice both answers equal 221,087,539
With that explanation out of the way, let's continue. Next, we take the number 221,087,539 and divide it by 2:
221,087,539 ÷ 2 = 110,543,769.5
If the quotient is a whole number, then 2 and 110,543,769.5 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 | 221,087,539 | |
| -1 | -221,087,539 |
Now, we try dividing 221,087,539 by 3:
221,087,539 ÷ 3 = 73,695,846.3333
If the quotient is a whole number, then 3 and 73,695,846.3333 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 | 221,087,539 | |
| -1 | -221,087,539 |
Let's try dividing by 4:
221,087,539 ÷ 4 = 55,271,884.75
If the quotient is a whole number, then 4 and 55,271,884.75 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 | 221,087,539 | |
| -1 | 221,087,539 |
If you did it right, you will end up with this table:
| 1 | 41 | 53 | 71 | 1,433 | 2,173 | 2,911 | 3,763 | 58,753 | 75,949 | 101,743 | 154,283 | 3,113,909 | 4,171,463 | 5,392,379 | 221,087,539 |
| -1 | -41 | -53 | -71 | -1,433 | -2,173 | -2,911 | -3,763 | -58,753 | -75,949 | -101,743 | -154,283 | -3,113,909 | -4,171,463 | -5,392,379 | -221,087,539 |
Here are some more numbers to try:
Try the factor calculator