A:
Positive:
1 x 1619755 x 3239511 x 1472519 x 852525 x 647931 x 522555 x 294595 x 1705155 x 1045209 x 775275 x 589341 x 475
Negative:
-1 x -161975-5 x -32395-11 x -14725-19 x -8525-25 x -6479-31 x -5225-55 x -2945-95 x -1705-155 x -1045-209 x -775-275 x -589-341 x -475
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 161,975, 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 | 161,975 | |
| -1 | -161,975 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 161,975.
Example:
1 x 161,975 = 161,975
and
-1 x -161,975 = 161,975
Notice both answers equal 161,975
With that explanation out of the way, let's continue. Next, we take the number 161,975 and divide it by 2:
161,975 ÷ 2 = 80,987.5
If the quotient is a whole number, then 2 and 80,987.5 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 | 161,975 | |
| -1 | -161,975 |
Now, we try dividing 161,975 by 3:
161,975 ÷ 3 = 53,991.6667
If the quotient is a whole number, then 3 and 53,991.6667 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 | 161,975 | |
| -1 | -161,975 |
Let's try dividing by 4:
161,975 ÷ 4 = 40,493.75
If the quotient is a whole number, then 4 and 40,493.75 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 | 161,975 | |
| -1 | 161,975 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 19 | 25 | 31 | 55 | 95 | 155 | 209 | 275 | 341 | 475 | 589 | 775 | 1,045 | 1,705 | 2,945 | 5,225 | 6,479 | 8,525 | 14,725 | 32,395 | 161,975 |
| -1 | -5 | -11 | -19 | -25 | -31 | -55 | -95 | -155 | -209 | -275 | -341 | -475 | -589 | -775 | -1,045 | -1,705 | -2,945 | -5,225 | -6,479 | -8,525 | -14,725 | -32,395 | -161,975 |
Here are some more numbers to try:
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