A:
Positive:
1 x 12013455141 x 293011167 x 1793053101 x 1189451433 x 2774472747 x 437334141 x 290116767 x 17753
Negative:
-1 x -120134551-41 x -2930111-67 x -1793053-101 x -1189451-433 x -277447-2747 x -43733-4141 x -29011-6767 x -17753
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 120,134,551, 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 | 120,134,551 | |
| -1 | -120,134,551 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,134,551.
Example:
1 x 120,134,551 = 120,134,551
and
-1 x -120,134,551 = 120,134,551
Notice both answers equal 120,134,551
With that explanation out of the way, let's continue. Next, we take the number 120,134,551 and divide it by 2:
120,134,551 ÷ 2 = 60,067,275.5
If the quotient is a whole number, then 2 and 60,067,275.5 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 | 120,134,551 | |
| -1 | -120,134,551 |
Now, we try dividing 120,134,551 by 3:
120,134,551 ÷ 3 = 40,044,850.3333
If the quotient is a whole number, then 3 and 40,044,850.3333 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 | 120,134,551 | |
| -1 | -120,134,551 |
Let's try dividing by 4:
120,134,551 ÷ 4 = 30,033,637.75
If the quotient is a whole number, then 4 and 30,033,637.75 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 | 120,134,551 | |
| -1 | 120,134,551 |
If you did it right, you will end up with this table:
| 1 | 41 | 67 | 101 | 433 | 2,747 | 4,141 | 6,767 | 17,753 | 29,011 | 43,733 | 277,447 | 1,189,451 | 1,793,053 | 2,930,111 | 120,134,551 |
| -1 | -41 | -67 | -101 | -433 | -2,747 | -4,141 | -6,767 | -17,753 | -29,011 | -43,733 | -277,447 | -1,189,451 | -1,793,053 | -2,930,111 | -120,134,551 |
Here are some more numbers to try:
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