A:
Positive:
1 x 1302426655 x 260485337 x 1860609535 x 3721219421 x 3093652105 x 618732947 x 441958839 x 14735
Negative:
-1 x -130242665-5 x -26048533-7 x -18606095-35 x -3721219-421 x -309365-2105 x -61873-2947 x -44195-8839 x -14735
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 130,242,665, 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 | 130,242,665 | |
| -1 | -130,242,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 130,242,665.
Example:
1 x 130,242,665 = 130,242,665
and
-1 x -130,242,665 = 130,242,665
Notice both answers equal 130,242,665
With that explanation out of the way, let's continue. Next, we take the number 130,242,665 and divide it by 2:
130,242,665 ÷ 2 = 65,121,332.5
If the quotient is a whole number, then 2 and 65,121,332.5 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 | 130,242,665 | |
| -1 | -130,242,665 |
Now, we try dividing 130,242,665 by 3:
130,242,665 ÷ 3 = 43,414,221.6667
If the quotient is a whole number, then 3 and 43,414,221.6667 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 | 130,242,665 | |
| -1 | -130,242,665 |
Let's try dividing by 4:
130,242,665 ÷ 4 = 32,560,666.25
If the quotient is a whole number, then 4 and 32,560,666.25 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 | 130,242,665 | |
| -1 | 130,242,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 421 | 2,105 | 2,947 | 8,839 | 14,735 | 44,195 | 61,873 | 309,365 | 3,721,219 | 18,606,095 | 26,048,533 | 130,242,665 |
| -1 | -5 | -7 | -35 | -421 | -2,105 | -2,947 | -8,839 | -14,735 | -44,195 | -61,873 | -309,365 | -3,721,219 | -18,606,095 | -26,048,533 | -130,242,665 |
Here are some more numbers to try:
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