A:
Positive:
1 x 430400155 x 860800323 x 187130547 x 915745115 x 374261235 x 1831491081 x 398155405 x 7963
Negative:
-1 x -43040015-5 x -8608003-23 x -1871305-47 x -915745-115 x -374261-235 x -183149-1081 x -39815-5405 x -7963
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 43,040,015, 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 | 43,040,015 | |
| -1 | -43,040,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 43,040,015.
Example:
1 x 43,040,015 = 43,040,015
and
-1 x -43,040,015 = 43,040,015
Notice both answers equal 43,040,015
With that explanation out of the way, let's continue. Next, we take the number 43,040,015 and divide it by 2:
43,040,015 ÷ 2 = 21,520,007.5
If the quotient is a whole number, then 2 and 21,520,007.5 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 | 43,040,015 | |
| -1 | -43,040,015 |
Now, we try dividing 43,040,015 by 3:
43,040,015 ÷ 3 = 14,346,671.6667
If the quotient is a whole number, then 3 and 14,346,671.6667 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 | 43,040,015 | |
| -1 | -43,040,015 |
Let's try dividing by 4:
43,040,015 ÷ 4 = 10,760,003.75
If the quotient is a whole number, then 4 and 10,760,003.75 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 | 43,040,015 | |
| -1 | 43,040,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 47 | 115 | 235 | 1,081 | 5,405 | 7,963 | 39,815 | 183,149 | 374,261 | 915,745 | 1,871,305 | 8,608,003 | 43,040,015 |
| -1 | -5 | -23 | -47 | -115 | -235 | -1,081 | -5,405 | -7,963 | -39,815 | -183,149 | -374,261 | -915,745 | -1,871,305 | -8,608,003 | -43,040,015 |
Here are some more numbers to try:
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