A:
Positive:
1 x 40042601313 x 3080200171 x 5639803463 x 864851923 x 433831937 x 4273496019 x 6652712181 x 32873
Negative:
-1 x -400426013-13 x -30802001-71 x -5639803-463 x -864851-923 x -433831-937 x -427349-6019 x -66527-12181 x -32873
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 400,426,013, 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 | 400,426,013 | |
| -1 | -400,426,013 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 400,426,013.
Example:
1 x 400,426,013 = 400,426,013
and
-1 x -400,426,013 = 400,426,013
Notice both answers equal 400,426,013
With that explanation out of the way, let's continue. Next, we take the number 400,426,013 and divide it by 2:
400,426,013 ÷ 2 = 200,213,006.5
If the quotient is a whole number, then 2 and 200,213,006.5 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 | 400,426,013 | |
| -1 | -400,426,013 |
Now, we try dividing 400,426,013 by 3:
400,426,013 ÷ 3 = 133,475,337.6667
If the quotient is a whole number, then 3 and 133,475,337.6667 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 | 400,426,013 | |
| -1 | -400,426,013 |
Let's try dividing by 4:
400,426,013 ÷ 4 = 100,106,503.25
If the quotient is a whole number, then 4 and 100,106,503.25 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 | 400,426,013 | |
| -1 | 400,426,013 |
If you did it right, you will end up with this table:
| 1 | 13 | 71 | 463 | 923 | 937 | 6,019 | 12,181 | 32,873 | 66,527 | 427,349 | 433,831 | 864,851 | 5,639,803 | 30,802,001 | 400,426,013 |
| -1 | -13 | -71 | -463 | -923 | -937 | -6,019 | -12,181 | -32,873 | -66,527 | -427,349 | -433,831 | -864,851 | -5,639,803 | -30,802,001 | -400,426,013 |
Here are some more numbers to try:
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