A:
Positive:
1 x 1607116217 x 2295880349 x 3279829103 x 1560307343 x 468547721 x 2229014549 x 353295047 x 31843
Negative:
-1 x -160711621-7 x -22958803-49 x -3279829-103 x -1560307-343 x -468547-721 x -222901-4549 x -35329-5047 x -31843
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 160,711,621, 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 | 160,711,621 | |
| -1 | -160,711,621 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 160,711,621.
Example:
1 x 160,711,621 = 160,711,621
and
-1 x -160,711,621 = 160,711,621
Notice both answers equal 160,711,621
With that explanation out of the way, let's continue. Next, we take the number 160,711,621 and divide it by 2:
160,711,621 ÷ 2 = 80,355,810.5
If the quotient is a whole number, then 2 and 80,355,810.5 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 | 160,711,621 | |
| -1 | -160,711,621 |
Now, we try dividing 160,711,621 by 3:
160,711,621 ÷ 3 = 53,570,540.3333
If the quotient is a whole number, then 3 and 53,570,540.3333 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 | 160,711,621 | |
| -1 | -160,711,621 |
Let's try dividing by 4:
160,711,621 ÷ 4 = 40,177,905.25
If the quotient is a whole number, then 4 and 40,177,905.25 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 | 160,711,621 | |
| -1 | 160,711,621 |
If you did it right, you will end up with this table:
| 1 | 7 | 49 | 103 | 343 | 721 | 4,549 | 5,047 | 31,843 | 35,329 | 222,901 | 468,547 | 1,560,307 | 3,279,829 | 22,958,803 | 160,711,621 |
| -1 | -7 | -49 | -103 | -343 | -721 | -4,549 | -5,047 | -31,843 | -35,329 | -222,901 | -468,547 | -1,560,307 | -3,279,829 | -22,958,803 | -160,711,621 |
Here are some more numbers to try:
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