A:
Positive:
1 x 4006145155 x 801229037 x 5723064535 x 11446129127 x 3154445635 x 630889889 x 4506354445 x 90127
Negative:
-1 x -400614515-5 x -80122903-7 x -57230645-35 x -11446129-127 x -3154445-635 x -630889-889 x -450635-4445 x -90127
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 400,614,515, 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 | 400,614,515 | |
| -1 | -400,614,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 400,614,515.
Example:
1 x 400,614,515 = 400,614,515
and
-1 x -400,614,515 = 400,614,515
Notice both answers equal 400,614,515
With that explanation out of the way, let's continue. Next, we take the number 400,614,515 and divide it by 2:
400,614,515 ÷ 2 = 200,307,257.5
If the quotient is a whole number, then 2 and 200,307,257.5 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 | 400,614,515 | |
| -1 | -400,614,515 |
Now, we try dividing 400,614,515 by 3:
400,614,515 ÷ 3 = 133,538,171.6667
If the quotient is a whole number, then 3 and 133,538,171.6667 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 | 400,614,515 | |
| -1 | -400,614,515 |
Let's try dividing by 4:
400,614,515 ÷ 4 = 100,153,628.75
If the quotient is a whole number, then 4 and 100,153,628.75 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 | 400,614,515 | |
| -1 | 400,614,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 127 | 635 | 889 | 4,445 | 90,127 | 450,635 | 630,889 | 3,154,445 | 11,446,129 | 57,230,645 | 80,122,903 | 400,614,515 |
| -1 | -5 | -7 | -35 | -127 | -635 | -889 | -4,445 | -90,127 | -450,635 | -630,889 | -3,154,445 | -11,446,129 | -57,230,645 | -80,122,903 | -400,614,515 |
Here are some more numbers to try:
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