A:
Positive:
1 x 2214505377 x 3163579111 x 2013186773 x 303356977 x 2875981511 x 433367803 x 2757795621 x 39397
Negative:
-1 x -221450537-7 x -31635791-11 x -20131867-73 x -3033569-77 x -2875981-511 x -433367-803 x -275779-5621 x -39397
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 221,450,537, 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 | 221,450,537 | |
| -1 | -221,450,537 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 221,450,537.
Example:
1 x 221,450,537 = 221,450,537
and
-1 x -221,450,537 = 221,450,537
Notice both answers equal 221,450,537
With that explanation out of the way, let's continue. Next, we take the number 221,450,537 and divide it by 2:
221,450,537 ÷ 2 = 110,725,268.5
If the quotient is a whole number, then 2 and 110,725,268.5 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 | 221,450,537 | |
| -1 | -221,450,537 |
Now, we try dividing 221,450,537 by 3:
221,450,537 ÷ 3 = 73,816,845.6667
If the quotient is a whole number, then 3 and 73,816,845.6667 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 | 221,450,537 | |
| -1 | -221,450,537 |
Let's try dividing by 4:
221,450,537 ÷ 4 = 55,362,634.25
If the quotient is a whole number, then 4 and 55,362,634.25 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 | 221,450,537 | |
| -1 | 221,450,537 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 73 | 77 | 511 | 803 | 5,621 | 39,397 | 275,779 | 433,367 | 2,875,981 | 3,033,569 | 20,131,867 | 31,635,791 | 221,450,537 |
| -1 | -7 | -11 | -73 | -77 | -511 | -803 | -5,621 | -39,397 | -275,779 | -433,367 | -2,875,981 | -3,033,569 | -20,131,867 | -31,635,791 | -221,450,537 |
Here are some more numbers to try:
Try the factor calculator