A:
Positive:
1 x 1300406177 x 1857723119 x 6844243133 x 977749239 x 5441031673 x 777294091 x 317874541 x 28637
Negative:
-1 x -130040617-7 x -18577231-19 x -6844243-133 x -977749-239 x -544103-1673 x -77729-4091 x -31787-4541 x -28637
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 130,040,617, 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 | 130,040,617 | |
| -1 | -130,040,617 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 130,040,617.
Example:
1 x 130,040,617 = 130,040,617
and
-1 x -130,040,617 = 130,040,617
Notice both answers equal 130,040,617
With that explanation out of the way, let's continue. Next, we take the number 130,040,617 and divide it by 2:
130,040,617 ÷ 2 = 65,020,308.5
If the quotient is a whole number, then 2 and 65,020,308.5 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 | 130,040,617 | |
| -1 | -130,040,617 |
Now, we try dividing 130,040,617 by 3:
130,040,617 ÷ 3 = 43,346,872.3333
If the quotient is a whole number, then 3 and 43,346,872.3333 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 | 130,040,617 | |
| -1 | -130,040,617 |
Let's try dividing by 4:
130,040,617 ÷ 4 = 32,510,154.25
If the quotient is a whole number, then 4 and 32,510,154.25 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 | 130,040,617 | |
| -1 | 130,040,617 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 133 | 239 | 1,673 | 4,091 | 4,541 | 28,637 | 31,787 | 77,729 | 544,103 | 977,749 | 6,844,243 | 18,577,231 | 130,040,617 |
| -1 | -7 | -19 | -133 | -239 | -1,673 | -4,091 | -4,541 | -28,637 | -31,787 | -77,729 | -544,103 | -977,749 | -6,844,243 | -18,577,231 | -130,040,617 |
Here are some more numbers to try:
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