A:
Positive:
1 x 16456012111 x 1496001119 x 866105931 x 5308391121 x 1360001209 x 787369341 x 482581589 x 2793892299 x 715792309 x 712693751 x 438716479 x 25399
Negative:
-1 x -164560121-11 x -14960011-19 x -8661059-31 x -5308391-121 x -1360001-209 x -787369-341 x -482581-589 x -279389-2299 x -71579-2309 x -71269-3751 x -43871-6479 x -25399
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 164,560,121, 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 | 164,560,121 | |
| -1 | -164,560,121 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 164,560,121.
Example:
1 x 164,560,121 = 164,560,121
and
-1 x -164,560,121 = 164,560,121
Notice both answers equal 164,560,121
With that explanation out of the way, let's continue. Next, we take the number 164,560,121 and divide it by 2:
164,560,121 ÷ 2 = 82,280,060.5
If the quotient is a whole number, then 2 and 82,280,060.5 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 | 164,560,121 | |
| -1 | -164,560,121 |
Now, we try dividing 164,560,121 by 3:
164,560,121 ÷ 3 = 54,853,373.6667
If the quotient is a whole number, then 3 and 54,853,373.6667 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 | 164,560,121 | |
| -1 | -164,560,121 |
Let's try dividing by 4:
164,560,121 ÷ 4 = 41,140,030.25
If the quotient is a whole number, then 4 and 41,140,030.25 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 | 164,560,121 | |
| -1 | 164,560,121 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 31 | 121 | 209 | 341 | 589 | 2,299 | 2,309 | 3,751 | 6,479 | 25,399 | 43,871 | 71,269 | 71,579 | 279,389 | 482,581 | 787,369 | 1,360,001 | 5,308,391 | 8,661,059 | 14,960,011 | 164,560,121 |
| -1 | -11 | -19 | -31 | -121 | -209 | -341 | -589 | -2,299 | -2,309 | -3,751 | -6,479 | -25,399 | -43,871 | -71,269 | -71,579 | -279,389 | -482,581 | -787,369 | -1,360,001 | -5,308,391 | -8,661,059 | -14,960,011 | -164,560,121 |
Here are some more numbers to try:
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