A:
Positive:
1 x 1300305377 x 1857579113 x 1000234991 x 142890797 x 1340521679 x 1915031261 x 1031178827 x 14731
Negative:
-1 x -130030537-7 x -18575791-13 x -10002349-91 x -1428907-97 x -1340521-679 x -191503-1261 x -103117-8827 x -14731
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 130,030,537, 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 | 130,030,537 | |
| -1 | -130,030,537 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 130,030,537.
Example:
1 x 130,030,537 = 130,030,537
and
-1 x -130,030,537 = 130,030,537
Notice both answers equal 130,030,537
With that explanation out of the way, let's continue. Next, we take the number 130,030,537 and divide it by 2:
130,030,537 ÷ 2 = 65,015,268.5
If the quotient is a whole number, then 2 and 65,015,268.5 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 | 130,030,537 | |
| -1 | -130,030,537 |
Now, we try dividing 130,030,537 by 3:
130,030,537 ÷ 3 = 43,343,512.3333
If the quotient is a whole number, then 3 and 43,343,512.3333 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 | 130,030,537 | |
| -1 | -130,030,537 |
Let's try dividing by 4:
130,030,537 ÷ 4 = 32,507,634.25
If the quotient is a whole number, then 4 and 32,507,634.25 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 | 130,030,537 | |
| -1 | 130,030,537 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 97 | 679 | 1,261 | 8,827 | 14,731 | 103,117 | 191,503 | 1,340,521 | 1,428,907 | 10,002,349 | 18,575,791 | 130,030,537 |
| -1 | -7 | -13 | -91 | -97 | -679 | -1,261 | -8,827 | -14,731 | -103,117 | -191,503 | -1,340,521 | -1,428,907 | -10,002,349 | -18,575,791 | -130,030,537 |
Here are some more numbers to try:
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