A:
Positive:
1 x 6151416055 x 12302832113 x 4731858565 x 9463717
Negative:
-1 x -615141605-5 x -123028321-13 x -47318585-65 x -9463717
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 615,141,605, 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 | 615,141,605 | |
| -1 | -615,141,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 615,141,605.
Example:
1 x 615,141,605 = 615,141,605
and
-1 x -615,141,605 = 615,141,605
Notice both answers equal 615,141,605
With that explanation out of the way, let's continue. Next, we take the number 615,141,605 and divide it by 2:
615,141,605 ÷ 2 = 307,570,802.5
If the quotient is a whole number, then 2 and 307,570,802.5 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 | 615,141,605 | |
| -1 | -615,141,605 |
Now, we try dividing 615,141,605 by 3:
615,141,605 ÷ 3 = 205,047,201.6667
If the quotient is a whole number, then 3 and 205,047,201.6667 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 | 615,141,605 | |
| -1 | -615,141,605 |
Let's try dividing by 4:
615,141,605 ÷ 4 = 153,785,401.25
If the quotient is a whole number, then 4 and 153,785,401.25 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 | 615,141,605 | |
| -1 | 615,141,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 9,463,717 | 47,318,585 | 123,028,321 | 615,141,605 |
| -1 | -5 | -13 | -65 | -9,463,717 | -47,318,585 | -123,028,321 | -615,141,605 |
Here are some more numbers to try:
Try the factor calculator