A:
Positive:
1 x 12053454131 x 388821167 x 1799023131 x 920111443 x 2720872077 x 580334061 x 296818777 x 13733
Negative:
-1 x -120534541-31 x -3888211-67 x -1799023-131 x -920111-443 x -272087-2077 x -58033-4061 x -29681-8777 x -13733
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 120,534,541, 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 | 120,534,541 | |
| -1 | -120,534,541 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,534,541.
Example:
1 x 120,534,541 = 120,534,541
and
-1 x -120,534,541 = 120,534,541
Notice both answers equal 120,534,541
With that explanation out of the way, let's continue. Next, we take the number 120,534,541 and divide it by 2:
120,534,541 ÷ 2 = 60,267,270.5
If the quotient is a whole number, then 2 and 60,267,270.5 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 | 120,534,541 | |
| -1 | -120,534,541 |
Now, we try dividing 120,534,541 by 3:
120,534,541 ÷ 3 = 40,178,180.3333
If the quotient is a whole number, then 3 and 40,178,180.3333 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 | 120,534,541 | |
| -1 | -120,534,541 |
Let's try dividing by 4:
120,534,541 ÷ 4 = 30,133,635.25
If the quotient is a whole number, then 4 and 30,133,635.25 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 | 120,534,541 | |
| -1 | 120,534,541 |
If you did it right, you will end up with this table:
| 1 | 31 | 67 | 131 | 443 | 2,077 | 4,061 | 8,777 | 13,733 | 29,681 | 58,033 | 272,087 | 920,111 | 1,799,023 | 3,888,211 | 120,534,541 |
| -1 | -31 | -67 | -131 | -443 | -2,077 | -4,061 | -8,777 | -13,733 | -29,681 | -58,033 | -272,087 | -920,111 | -1,799,023 | -3,888,211 | -120,534,541 |
Here are some more numbers to try:
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