A:
Positive:
1 x 1643565555 x 3287131111 x 1494150519 x 865034555 x 298830195 x 1730069209 x 7863951045 x 157279
Negative:
-1 x -164356555-5 x -32871311-11 x -14941505-19 x -8650345-55 x -2988301-95 x -1730069-209 x -786395-1045 x -157279
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 164,356,555, 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 | 164,356,555 | |
| -1 | -164,356,555 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 164,356,555.
Example:
1 x 164,356,555 = 164,356,555
and
-1 x -164,356,555 = 164,356,555
Notice both answers equal 164,356,555
With that explanation out of the way, let's continue. Next, we take the number 164,356,555 and divide it by 2:
164,356,555 ÷ 2 = 82,178,277.5
If the quotient is a whole number, then 2 and 82,178,277.5 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 | 164,356,555 | |
| -1 | -164,356,555 |
Now, we try dividing 164,356,555 by 3:
164,356,555 ÷ 3 = 54,785,518.3333
If the quotient is a whole number, then 3 and 54,785,518.3333 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 | 164,356,555 | |
| -1 | -164,356,555 |
Let's try dividing by 4:
164,356,555 ÷ 4 = 41,089,138.75
If the quotient is a whole number, then 4 and 41,089,138.75 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 | 164,356,555 | |
| -1 | 164,356,555 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 19 | 55 | 95 | 209 | 1,045 | 157,279 | 786,395 | 1,730,069 | 2,988,301 | 8,650,345 | 14,941,505 | 32,871,311 | 164,356,555 |
| -1 | -5 | -11 | -19 | -55 | -95 | -209 | -1,045 | -157,279 | -786,395 | -1,730,069 | -2,988,301 | -8,650,345 | -14,941,505 | -32,871,311 | -164,356,555 |
Here are some more numbers to try:
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