A:
Positive:
1 x 1227203537 x 1753147949 x 2504497101 x 1215053137 x 895769181 x 678013707 x 173579959 x 1279671267 x 968594949 x 247976713 x 182818869 x 13837
Negative:
-1 x -122720353-7 x -17531479-49 x -2504497-101 x -1215053-137 x -895769-181 x -678013-707 x -173579-959 x -127967-1267 x -96859-4949 x -24797-6713 x -18281-8869 x -13837
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 122,720,353, 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 | 122,720,353 | |
| -1 | -122,720,353 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 122,720,353.
Example:
1 x 122,720,353 = 122,720,353
and
-1 x -122,720,353 = 122,720,353
Notice both answers equal 122,720,353
With that explanation out of the way, let's continue. Next, we take the number 122,720,353 and divide it by 2:
122,720,353 ÷ 2 = 61,360,176.5
If the quotient is a whole number, then 2 and 61,360,176.5 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 | 122,720,353 | |
| -1 | -122,720,353 |
Now, we try dividing 122,720,353 by 3:
122,720,353 ÷ 3 = 40,906,784.3333
If the quotient is a whole number, then 3 and 40,906,784.3333 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 | 122,720,353 | |
| -1 | -122,720,353 |
Let's try dividing by 4:
122,720,353 ÷ 4 = 30,680,088.25
If the quotient is a whole number, then 4 and 30,680,088.25 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 | 122,720,353 | |
| -1 | 122,720,353 |
If you did it right, you will end up with this table:
| 1 | 7 | 49 | 101 | 137 | 181 | 707 | 959 | 1,267 | 4,949 | 6,713 | 8,869 | 13,837 | 18,281 | 24,797 | 96,859 | 127,967 | 173,579 | 678,013 | 895,769 | 1,215,053 | 2,504,497 | 17,531,479 | 122,720,353 |
| -1 | -7 | -49 | -101 | -137 | -181 | -707 | -959 | -1,267 | -4,949 | -6,713 | -8,869 | -13,837 | -18,281 | -24,797 | -96,859 | -127,967 | -173,579 | -678,013 | -895,769 | -1,215,053 | -2,504,497 | -17,531,479 | -122,720,353 |
Here are some more numbers to try:
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