A:
Positive:
1 x 4016231355 x 8032462731 x 1295558553 x 7577795155 x 2591117265 x 15155591643 x 2444458215 x 48889
Negative:
-1 x -401623135-5 x -80324627-31 x -12955585-53 x -7577795-155 x -2591117-265 x -1515559-1643 x -244445-8215 x -48889
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 401,623,135, 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 | 401,623,135 | |
| -1 | -401,623,135 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 401,623,135.
Example:
1 x 401,623,135 = 401,623,135
and
-1 x -401,623,135 = 401,623,135
Notice both answers equal 401,623,135
With that explanation out of the way, let's continue. Next, we take the number 401,623,135 and divide it by 2:
401,623,135 ÷ 2 = 200,811,567.5
If the quotient is a whole number, then 2 and 200,811,567.5 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 | 401,623,135 | |
| -1 | -401,623,135 |
Now, we try dividing 401,623,135 by 3:
401,623,135 ÷ 3 = 133,874,378.3333
If the quotient is a whole number, then 3 and 133,874,378.3333 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 | 401,623,135 | |
| -1 | -401,623,135 |
Let's try dividing by 4:
401,623,135 ÷ 4 = 100,405,783.75
If the quotient is a whole number, then 4 and 100,405,783.75 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 | 401,623,135 | |
| -1 | 401,623,135 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 53 | 155 | 265 | 1,643 | 8,215 | 48,889 | 244,445 | 1,515,559 | 2,591,117 | 7,577,795 | 12,955,585 | 80,324,627 | 401,623,135 |
| -1 | -5 | -31 | -53 | -155 | -265 | -1,643 | -8,215 | -48,889 | -244,445 | -1,515,559 | -2,591,117 | -7,577,795 | -12,955,585 | -80,324,627 | -401,623,135 |
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