A:
Positive:
1 x 1619009955 x 3238019919 x 852110595 x 1704221443 x 3654652215 x 730933847 x 420858417 x 19235
Negative:
-1 x -161900995-5 x -32380199-19 x -8521105-95 x -1704221-443 x -365465-2215 x -73093-3847 x -42085-8417 x -19235
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 161,900,995, 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 | 161,900,995 | |
| -1 | -161,900,995 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 161,900,995.
Example:
1 x 161,900,995 = 161,900,995
and
-1 x -161,900,995 = 161,900,995
Notice both answers equal 161,900,995
With that explanation out of the way, let's continue. Next, we take the number 161,900,995 and divide it by 2:
161,900,995 ÷ 2 = 80,950,497.5
If the quotient is a whole number, then 2 and 80,950,497.5 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 | 161,900,995 | |
| -1 | -161,900,995 |
Now, we try dividing 161,900,995 by 3:
161,900,995 ÷ 3 = 53,966,998.3333
If the quotient is a whole number, then 3 and 53,966,998.3333 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 | 161,900,995 | |
| -1 | -161,900,995 |
Let's try dividing by 4:
161,900,995 ÷ 4 = 40,475,248.75
If the quotient is a whole number, then 4 and 40,475,248.75 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 | 161,900,995 | |
| -1 | 161,900,995 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 443 | 2,215 | 3,847 | 8,417 | 19,235 | 42,085 | 73,093 | 365,465 | 1,704,221 | 8,521,105 | 32,380,199 | 161,900,995 |
| -1 | -5 | -19 | -95 | -443 | -2,215 | -3,847 | -8,417 | -19,235 | -42,085 | -73,093 | -365,465 | -1,704,221 | -8,521,105 | -32,380,199 | -161,900,995 |
Here are some more numbers to try:
Try the factor calculator