A:
Positive:
1 x 1626764055 x 3253528179 x 2059195269 x 604745395 x 4118391345 x 1209491531 x 1062557655 x 21251
Negative:
-1 x -162676405-5 x -32535281-79 x -2059195-269 x -604745-395 x -411839-1345 x -120949-1531 x -106255-7655 x -21251
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 162,676,405, 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 | 162,676,405 | |
| -1 | -162,676,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 162,676,405.
Example:
1 x 162,676,405 = 162,676,405
and
-1 x -162,676,405 = 162,676,405
Notice both answers equal 162,676,405
With that explanation out of the way, let's continue. Next, we take the number 162,676,405 and divide it by 2:
162,676,405 ÷ 2 = 81,338,202.5
If the quotient is a whole number, then 2 and 81,338,202.5 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 | 162,676,405 | |
| -1 | -162,676,405 |
Now, we try dividing 162,676,405 by 3:
162,676,405 ÷ 3 = 54,225,468.3333
If the quotient is a whole number, then 3 and 54,225,468.3333 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 | 162,676,405 | |
| -1 | -162,676,405 |
Let's try dividing by 4:
162,676,405 ÷ 4 = 40,669,101.25
If the quotient is a whole number, then 4 and 40,669,101.25 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 | 162,676,405 | |
| -1 | 162,676,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 79 | 269 | 395 | 1,345 | 1,531 | 7,655 | 21,251 | 106,255 | 120,949 | 411,839 | 604,745 | 2,059,195 | 32,535,281 | 162,676,405 |
| -1 | -5 | -79 | -269 | -395 | -1,345 | -1,531 | -7,655 | -21,251 | -106,255 | -120,949 | -411,839 | -604,745 | -2,059,195 | -32,535,281 | -162,676,405 |
Here are some more numbers to try:
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