A:
Positive:
1 x 40011616129 x 1379710943 x 930502767 x 59718831247 x 3208631943 x 2059272881 x 1388814789 x 83549
Negative:
-1 x -400116161-29 x -13797109-43 x -9305027-67 x -5971883-1247 x -320863-1943 x -205927-2881 x -138881-4789 x -83549
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 400,116,161, 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 | 400,116,161 | |
| -1 | -400,116,161 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 400,116,161.
Example:
1 x 400,116,161 = 400,116,161
and
-1 x -400,116,161 = 400,116,161
Notice both answers equal 400,116,161
With that explanation out of the way, let's continue. Next, we take the number 400,116,161 and divide it by 2:
400,116,161 ÷ 2 = 200,058,080.5
If the quotient is a whole number, then 2 and 200,058,080.5 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 | 400,116,161 | |
| -1 | -400,116,161 |
Now, we try dividing 400,116,161 by 3:
400,116,161 ÷ 3 = 133,372,053.6667
If the quotient is a whole number, then 3 and 133,372,053.6667 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 | 400,116,161 | |
| -1 | -400,116,161 |
Let's try dividing by 4:
400,116,161 ÷ 4 = 100,029,040.25
If the quotient is a whole number, then 4 and 100,029,040.25 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 | 400,116,161 | |
| -1 | 400,116,161 |
If you did it right, you will end up with this table:
| 1 | 29 | 43 | 67 | 1,247 | 1,943 | 2,881 | 4,789 | 83,549 | 138,881 | 205,927 | 320,863 | 5,971,883 | 9,305,027 | 13,797,109 | 400,116,161 |
| -1 | -29 | -43 | -67 | -1,247 | -1,943 | -2,881 | -4,789 | -83,549 | -138,881 | -205,927 | -320,863 | -5,971,883 | -9,305,027 | -13,797,109 | -400,116,161 |
Here are some more numbers to try:
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