A:
Positive:
1 x 1643206677 x 2347438149 x 3353483343 x 479069571 x 287777839 x 1958533997 x 411115873 x 27979
Negative:
-1 x -164320667-7 x -23474381-49 x -3353483-343 x -479069-571 x -287777-839 x -195853-3997 x -41111-5873 x -27979
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 164,320,667, 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 | 164,320,667 | |
| -1 | -164,320,667 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 164,320,667.
Example:
1 x 164,320,667 = 164,320,667
and
-1 x -164,320,667 = 164,320,667
Notice both answers equal 164,320,667
With that explanation out of the way, let's continue. Next, we take the number 164,320,667 and divide it by 2:
164,320,667 ÷ 2 = 82,160,333.5
If the quotient is a whole number, then 2 and 82,160,333.5 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 | 164,320,667 | |
| -1 | -164,320,667 |
Now, we try dividing 164,320,667 by 3:
164,320,667 ÷ 3 = 54,773,555.6667
If the quotient is a whole number, then 3 and 54,773,555.6667 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 | 164,320,667 | |
| -1 | -164,320,667 |
Let's try dividing by 4:
164,320,667 ÷ 4 = 41,080,166.75
If the quotient is a whole number, then 4 and 41,080,166.75 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 | 164,320,667 | |
| -1 | 164,320,667 |
If you did it right, you will end up with this table:
| 1 | 7 | 49 | 343 | 571 | 839 | 3,997 | 5,873 | 27,979 | 41,111 | 195,853 | 287,777 | 479,069 | 3,353,483 | 23,474,381 | 164,320,667 |
| -1 | -7 | -49 | -343 | -571 | -839 | -3,997 | -5,873 | -27,979 | -41,111 | -195,853 | -287,777 | -479,069 | -3,353,483 | -23,474,381 | -164,320,667 |
Here are some more numbers to try:
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