A:
Positive:
1 x 12040277337 x 325412941 x 2936653139 x 866207571 x 2108631517 x 793695143 x 234115699 x 21127
Negative:
-1 x -120402773-37 x -3254129-41 x -2936653-139 x -866207-571 x -210863-1517 x -79369-5143 x -23411-5699 x -21127
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 120,402,773, 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 | 120,402,773 | |
| -1 | -120,402,773 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,402,773.
Example:
1 x 120,402,773 = 120,402,773
and
-1 x -120,402,773 = 120,402,773
Notice both answers equal 120,402,773
With that explanation out of the way, let's continue. Next, we take the number 120,402,773 and divide it by 2:
120,402,773 ÷ 2 = 60,201,386.5
If the quotient is a whole number, then 2 and 60,201,386.5 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 | 120,402,773 | |
| -1 | -120,402,773 |
Now, we try dividing 120,402,773 by 3:
120,402,773 ÷ 3 = 40,134,257.6667
If the quotient is a whole number, then 3 and 40,134,257.6667 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 | 120,402,773 | |
| -1 | -120,402,773 |
Let's try dividing by 4:
120,402,773 ÷ 4 = 30,100,693.25
If the quotient is a whole number, then 4 and 30,100,693.25 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 | 120,402,773 | |
| -1 | 120,402,773 |
If you did it right, you will end up with this table:
| 1 | 37 | 41 | 139 | 571 | 1,517 | 5,143 | 5,699 | 21,127 | 23,411 | 79,369 | 210,863 | 866,207 | 2,936,653 | 3,254,129 | 120,402,773 |
| -1 | -37 | -41 | -139 | -571 | -1,517 | -5,143 | -5,699 | -21,127 | -23,411 | -79,369 | -210,863 | -866,207 | -2,936,653 | -3,254,129 | -120,402,773 |
Here are some more numbers to try:
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