A:
Positive:
1 x 4007011617 x 5724302373 x 5489057379 x 1057259511 x 7841512069 x 1936692653 x 15103714483 x 27667
Negative:
-1 x -400701161-7 x -57243023-73 x -5489057-379 x -1057259-511 x -784151-2069 x -193669-2653 x -151037-14483 x -27667
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 400,701,161, 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 | 400,701,161 | |
| -1 | -400,701,161 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 400,701,161.
Example:
1 x 400,701,161 = 400,701,161
and
-1 x -400,701,161 = 400,701,161
Notice both answers equal 400,701,161
With that explanation out of the way, let's continue. Next, we take the number 400,701,161 and divide it by 2:
400,701,161 ÷ 2 = 200,350,580.5
If the quotient is a whole number, then 2 and 200,350,580.5 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 | 400,701,161 | |
| -1 | -400,701,161 |
Now, we try dividing 400,701,161 by 3:
400,701,161 ÷ 3 = 133,567,053.6667
If the quotient is a whole number, then 3 and 133,567,053.6667 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 | 400,701,161 | |
| -1 | -400,701,161 |
Let's try dividing by 4:
400,701,161 ÷ 4 = 100,175,290.25
If the quotient is a whole number, then 4 and 100,175,290.25 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 | 400,701,161 | |
| -1 | 400,701,161 |
If you did it right, you will end up with this table:
| 1 | 7 | 73 | 379 | 511 | 2,069 | 2,653 | 14,483 | 27,667 | 151,037 | 193,669 | 784,151 | 1,057,259 | 5,489,057 | 57,243,023 | 400,701,161 |
| -1 | -7 | -73 | -379 | -511 | -2,069 | -2,653 | -14,483 | -27,667 | -151,037 | -193,669 | -784,151 | -1,057,259 | -5,489,057 | -57,243,023 | -400,701,161 |
Here are some more numbers to try:
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