A:
Positive:
1 x 4002235377 x 5717479117 x 23542561119 x 3363223151 x 26504871057 x 3786412567 x 15591117969 x 22273
Negative:
-1 x -400223537-7 x -57174791-17 x -23542561-119 x -3363223-151 x -2650487-1057 x -378641-2567 x -155911-17969 x -22273
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 400,223,537, 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 | 400,223,537 | |
| -1 | -400,223,537 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 400,223,537.
Example:
1 x 400,223,537 = 400,223,537
and
-1 x -400,223,537 = 400,223,537
Notice both answers equal 400,223,537
With that explanation out of the way, let's continue. Next, we take the number 400,223,537 and divide it by 2:
400,223,537 ÷ 2 = 200,111,768.5
If the quotient is a whole number, then 2 and 200,111,768.5 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 | 400,223,537 | |
| -1 | -400,223,537 |
Now, we try dividing 400,223,537 by 3:
400,223,537 ÷ 3 = 133,407,845.6667
If the quotient is a whole number, then 3 and 133,407,845.6667 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 | 400,223,537 | |
| -1 | -400,223,537 |
Let's try dividing by 4:
400,223,537 ÷ 4 = 100,055,884.25
If the quotient is a whole number, then 4 and 100,055,884.25 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 | 400,223,537 | |
| -1 | 400,223,537 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 151 | 1,057 | 2,567 | 17,969 | 22,273 | 155,911 | 378,641 | 2,650,487 | 3,363,223 | 23,542,561 | 57,174,791 | 400,223,537 |
| -1 | -7 | -17 | -119 | -151 | -1,057 | -2,567 | -17,969 | -22,273 | -155,911 | -378,641 | -2,650,487 | -3,363,223 | -23,542,561 | -57,174,791 | -400,223,537 |
Here are some more numbers to try:
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