A:
Positive:
1 x 400303155 x 800606313 x 307925565 x 615851227 x 1763451135 x 352692713 x 147552951 x 13565
Negative:
-1 x -40030315-5 x -8006063-13 x -3079255-65 x -615851-227 x -176345-1135 x -35269-2713 x -14755-2951 x -13565
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 40,030,315, 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 | 40,030,315 | |
| -1 | -40,030,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,030,315.
Example:
1 x 40,030,315 = 40,030,315
and
-1 x -40,030,315 = 40,030,315
Notice both answers equal 40,030,315
With that explanation out of the way, let's continue. Next, we take the number 40,030,315 and divide it by 2:
40,030,315 ÷ 2 = 20,015,157.5
If the quotient is a whole number, then 2 and 20,015,157.5 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 | 40,030,315 | |
| -1 | -40,030,315 |
Now, we try dividing 40,030,315 by 3:
40,030,315 ÷ 3 = 13,343,438.3333
If the quotient is a whole number, then 3 and 13,343,438.3333 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 | 40,030,315 | |
| -1 | -40,030,315 |
Let's try dividing by 4:
40,030,315 ÷ 4 = 10,007,578.75
If the quotient is a whole number, then 4 and 10,007,578.75 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 | 40,030,315 | |
| -1 | 40,030,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 227 | 1,135 | 2,713 | 2,951 | 13,565 | 14,755 | 35,269 | 176,345 | 615,851 | 3,079,255 | 8,006,063 | 40,030,315 |
| -1 | -5 | -13 | -65 | -227 | -1,135 | -2,713 | -2,951 | -13,565 | -14,755 | -35,269 | -176,345 | -615,851 | -3,079,255 | -8,006,063 | -40,030,315 |
Here are some more numbers to try:
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