A:
Positive:
1 x 40025350313 x 3078873143 x 9308221367 x 1090609559 x 7160171951 x 2051534771 x 8389315781 x 25363
Negative:
-1 x -400253503-13 x -30788731-43 x -9308221-367 x -1090609-559 x -716017-1951 x -205153-4771 x -83893-15781 x -25363
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 400,253,503, 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 | 400,253,503 | |
| -1 | -400,253,503 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 400,253,503.
Example:
1 x 400,253,503 = 400,253,503
and
-1 x -400,253,503 = 400,253,503
Notice both answers equal 400,253,503
With that explanation out of the way, let's continue. Next, we take the number 400,253,503 and divide it by 2:
400,253,503 ÷ 2 = 200,126,751.5
If the quotient is a whole number, then 2 and 200,126,751.5 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 | 400,253,503 | |
| -1 | -400,253,503 |
Now, we try dividing 400,253,503 by 3:
400,253,503 ÷ 3 = 133,417,834.3333
If the quotient is a whole number, then 3 and 133,417,834.3333 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 | 400,253,503 | |
| -1 | -400,253,503 |
Let's try dividing by 4:
400,253,503 ÷ 4 = 100,063,375.75
If the quotient is a whole number, then 4 and 100,063,375.75 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 | 400,253,503 | |
| -1 | 400,253,503 |
If you did it right, you will end up with this table:
| 1 | 13 | 43 | 367 | 559 | 1,951 | 4,771 | 15,781 | 25,363 | 83,893 | 205,153 | 716,017 | 1,090,609 | 9,308,221 | 30,788,731 | 400,253,503 |
| -1 | -13 | -43 | -367 | -559 | -1,951 | -4,771 | -15,781 | -25,363 | -83,893 | -205,153 | -716,017 | -1,090,609 | -9,308,221 | -30,788,731 | -400,253,503 |
Here are some more numbers to try:
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