A:
Positive:
1 x 6151462255 x 12302924525 x 24605849409 x 15040252045 x 30080510225 x 60161
Negative:
-1 x -615146225-5 x -123029245-25 x -24605849-409 x -1504025-2045 x -300805-10225 x -60161
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 615,146,225, 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 | 615,146,225 | |
| -1 | -615,146,225 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 615,146,225.
Example:
1 x 615,146,225 = 615,146,225
and
-1 x -615,146,225 = 615,146,225
Notice both answers equal 615,146,225
With that explanation out of the way, let's continue. Next, we take the number 615,146,225 and divide it by 2:
615,146,225 ÷ 2 = 307,573,112.5
If the quotient is a whole number, then 2 and 307,573,112.5 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 | 615,146,225 | |
| -1 | -615,146,225 |
Now, we try dividing 615,146,225 by 3:
615,146,225 ÷ 3 = 205,048,741.6667
If the quotient is a whole number, then 3 and 205,048,741.6667 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 | 615,146,225 | |
| -1 | -615,146,225 |
Let's try dividing by 4:
615,146,225 ÷ 4 = 153,786,556.25
If the quotient is a whole number, then 4 and 153,786,556.25 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 | 615,146,225 | |
| -1 | 615,146,225 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 409 | 2,045 | 10,225 | 60,161 | 300,805 | 1,504,025 | 24,605,849 | 123,029,245 | 615,146,225 |
| -1 | -5 | -25 | -409 | -2,045 | -10,225 | -60,161 | -300,805 | -1,504,025 | -24,605,849 | -123,029,245 | -615,146,225 |
Here are some more numbers to try:
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