A:
Positive:
1 x 4006273455 x 8012546943 x 9316915173 x 2315765215 x 1863383865 x 4631537439 x 5385510771 x 37195
Negative:
-1 x -400627345-5 x -80125469-43 x -9316915-173 x -2315765-215 x -1863383-865 x -463153-7439 x -53855-10771 x -37195
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 400,627,345, 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 | 400,627,345 | |
| -1 | -400,627,345 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 400,627,345.
Example:
1 x 400,627,345 = 400,627,345
and
-1 x -400,627,345 = 400,627,345
Notice both answers equal 400,627,345
With that explanation out of the way, let's continue. Next, we take the number 400,627,345 and divide it by 2:
400,627,345 ÷ 2 = 200,313,672.5
If the quotient is a whole number, then 2 and 200,313,672.5 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 | 400,627,345 | |
| -1 | -400,627,345 |
Now, we try dividing 400,627,345 by 3:
400,627,345 ÷ 3 = 133,542,448.3333
If the quotient is a whole number, then 3 and 133,542,448.3333 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 | 400,627,345 | |
| -1 | -400,627,345 |
Let's try dividing by 4:
400,627,345 ÷ 4 = 100,156,836.25
If the quotient is a whole number, then 4 and 100,156,836.25 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 | 400,627,345 | |
| -1 | 400,627,345 |
If you did it right, you will end up with this table:
| 1 | 5 | 43 | 173 | 215 | 865 | 7,439 | 10,771 | 37,195 | 53,855 | 463,153 | 1,863,383 | 2,315,765 | 9,316,915 | 80,125,469 | 400,627,345 |
| -1 | -5 | -43 | -173 | -215 | -865 | -7,439 | -10,771 | -37,195 | -53,855 | -463,153 | -1,863,383 | -2,315,765 | -9,316,915 | -80,125,469 | -400,627,345 |
Here are some more numbers to try:
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