A:
Positive:
1 x 1302884055 x 2605768113 x 1002218565 x 2004437229 x 5689451145 x 1137892977 x 437658753 x 14885
Negative:
-1 x -130288405-5 x -26057681-13 x -10022185-65 x -2004437-229 x -568945-1145 x -113789-2977 x -43765-8753 x -14885
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 130,288,405, 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 | 130,288,405 | |
| -1 | -130,288,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 130,288,405.
Example:
1 x 130,288,405 = 130,288,405
and
-1 x -130,288,405 = 130,288,405
Notice both answers equal 130,288,405
With that explanation out of the way, let's continue. Next, we take the number 130,288,405 and divide it by 2:
130,288,405 ÷ 2 = 65,144,202.5
If the quotient is a whole number, then 2 and 65,144,202.5 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 | 130,288,405 | |
| -1 | -130,288,405 |
Now, we try dividing 130,288,405 by 3:
130,288,405 ÷ 3 = 43,429,468.3333
If the quotient is a whole number, then 3 and 43,429,468.3333 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 | 130,288,405 | |
| -1 | -130,288,405 |
Let's try dividing by 4:
130,288,405 ÷ 4 = 32,572,101.25
If the quotient is a whole number, then 4 and 32,572,101.25 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 | 130,288,405 | |
| -1 | 130,288,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 229 | 1,145 | 2,977 | 8,753 | 14,885 | 43,765 | 113,789 | 568,945 | 2,004,437 | 10,022,185 | 26,057,681 | 130,288,405 |
| -1 | -5 | -13 | -65 | -229 | -1,145 | -2,977 | -8,753 | -14,885 | -43,765 | -113,789 | -568,945 | -2,004,437 | -10,022,185 | -26,057,681 | -130,288,405 |
Here are some more numbers to try:
Try the factor calculator