A:
Positive:
1 x 1640521617 x 2343602313 x 1261939791 x 1802771353 x 4647372471 x 663914589 x 357495107 x 32123
Negative:
-1 x -164052161-7 x -23436023-13 x -12619397-91 x -1802771-353 x -464737-2471 x -66391-4589 x -35749-5107 x -32123
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 164,052,161, 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 | 164,052,161 | |
| -1 | -164,052,161 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 164,052,161.
Example:
1 x 164,052,161 = 164,052,161
and
-1 x -164,052,161 = 164,052,161
Notice both answers equal 164,052,161
With that explanation out of the way, let's continue. Next, we take the number 164,052,161 and divide it by 2:
164,052,161 ÷ 2 = 82,026,080.5
If the quotient is a whole number, then 2 and 82,026,080.5 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 | 164,052,161 | |
| -1 | -164,052,161 |
Now, we try dividing 164,052,161 by 3:
164,052,161 ÷ 3 = 54,684,053.6667
If the quotient is a whole number, then 3 and 54,684,053.6667 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 | 164,052,161 | |
| -1 | -164,052,161 |
Let's try dividing by 4:
164,052,161 ÷ 4 = 41,013,040.25
If the quotient is a whole number, then 4 and 41,013,040.25 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 | 164,052,161 | |
| -1 | 164,052,161 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 353 | 2,471 | 4,589 | 5,107 | 32,123 | 35,749 | 66,391 | 464,737 | 1,802,771 | 12,619,397 | 23,436,023 | 164,052,161 |
| -1 | -7 | -13 | -91 | -353 | -2,471 | -4,589 | -5,107 | -32,123 | -35,749 | -66,391 | -464,737 | -1,802,771 | -12,619,397 | -23,436,023 | -164,052,161 |
Here are some more numbers to try:
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