A:
Positive:
1 x 2211033377 x 3158619113 x 1700794929 x 762425349 x 451231391 x 2429707203 x 1089179377 x 586481637 x 3471011421 x 1555972639 x 8378311969 x 18473
Negative:
-1 x -221103337-7 x -31586191-13 x -17007949-29 x -7624253-49 x -4512313-91 x -2429707-203 x -1089179-377 x -586481-637 x -347101-1421 x -155597-2639 x -83783-11969 x -18473
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 221,103,337, 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 | 221,103,337 | |
| -1 | -221,103,337 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 221,103,337.
Example:
1 x 221,103,337 = 221,103,337
and
-1 x -221,103,337 = 221,103,337
Notice both answers equal 221,103,337
With that explanation out of the way, let's continue. Next, we take the number 221,103,337 and divide it by 2:
221,103,337 ÷ 2 = 110,551,668.5
If the quotient is a whole number, then 2 and 110,551,668.5 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 | 221,103,337 | |
| -1 | -221,103,337 |
Now, we try dividing 221,103,337 by 3:
221,103,337 ÷ 3 = 73,701,112.3333
If the quotient is a whole number, then 3 and 73,701,112.3333 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 | 221,103,337 | |
| -1 | -221,103,337 |
Let's try dividing by 4:
221,103,337 ÷ 4 = 55,275,834.25
If the quotient is a whole number, then 4 and 55,275,834.25 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 | 221,103,337 | |
| -1 | 221,103,337 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 29 | 49 | 91 | 203 | 377 | 637 | 1,421 | 2,639 | 11,969 | 18,473 | 83,783 | 155,597 | 347,101 | 586,481 | 1,089,179 | 2,429,707 | 4,512,313 | 7,624,253 | 17,007,949 | 31,586,191 | 221,103,337 |
| -1 | -7 | -13 | -29 | -49 | -91 | -203 | -377 | -637 | -1,421 | -2,639 | -11,969 | -18,473 | -83,783 | -155,597 | -347,101 | -586,481 | -1,089,179 | -2,429,707 | -4,512,313 | -7,624,253 | -17,007,949 | -31,586,191 | -221,103,337 |
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