A:
Positive:
1 x 1381800355 x 276360077 x 1974000535 x 3948001463 x 2984452315 x 596893241 x 426358527 x 16205
Negative:
-1 x -138180035-5 x -27636007-7 x -19740005-35 x -3948001-463 x -298445-2315 x -59689-3241 x -42635-8527 x -16205
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 138,180,035, 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 | 138,180,035 | |
| -1 | -138,180,035 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 138,180,035.
Example:
1 x 138,180,035 = 138,180,035
and
-1 x -138,180,035 = 138,180,035
Notice both answers equal 138,180,035
With that explanation out of the way, let's continue. Next, we take the number 138,180,035 and divide it by 2:
138,180,035 ÷ 2 = 69,090,017.5
If the quotient is a whole number, then 2 and 69,090,017.5 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 | 138,180,035 | |
| -1 | -138,180,035 |
Now, we try dividing 138,180,035 by 3:
138,180,035 ÷ 3 = 46,060,011.6667
If the quotient is a whole number, then 3 and 46,060,011.6667 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 | 138,180,035 | |
| -1 | -138,180,035 |
Let's try dividing by 4:
138,180,035 ÷ 4 = 34,545,008.75
If the quotient is a whole number, then 4 and 34,545,008.75 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 | 138,180,035 | |
| -1 | 138,180,035 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 463 | 2,315 | 3,241 | 8,527 | 16,205 | 42,635 | 59,689 | 298,445 | 3,948,001 | 19,740,005 | 27,636,007 | 138,180,035 |
| -1 | -5 | -7 | -35 | -463 | -2,315 | -3,241 | -8,527 | -16,205 | -42,635 | -59,689 | -298,445 | -3,948,001 | -19,740,005 | -27,636,007 | -138,180,035 |
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