A:
Positive:
1 x 1570222017 x 22431743113 x 1389577179 x 877219791 x 1985111109 x 1415891253 x 1253177763 x 20227
Negative:
-1 x -157022201-7 x -22431743-113 x -1389577-179 x -877219-791 x -198511-1109 x -141589-1253 x -125317-7763 x -20227
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 157,022,201, 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 | 157,022,201 | |
| -1 | -157,022,201 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 157,022,201.
Example:
1 x 157,022,201 = 157,022,201
and
-1 x -157,022,201 = 157,022,201
Notice both answers equal 157,022,201
With that explanation out of the way, let's continue. Next, we take the number 157,022,201 and divide it by 2:
157,022,201 ÷ 2 = 78,511,100.5
If the quotient is a whole number, then 2 and 78,511,100.5 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 | 157,022,201 | |
| -1 | -157,022,201 |
Now, we try dividing 157,022,201 by 3:
157,022,201 ÷ 3 = 52,340,733.6667
If the quotient is a whole number, then 3 and 52,340,733.6667 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 | 157,022,201 | |
| -1 | -157,022,201 |
Let's try dividing by 4:
157,022,201 ÷ 4 = 39,255,550.25
If the quotient is a whole number, then 4 and 39,255,550.25 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 | 157,022,201 | |
| -1 | 157,022,201 |
If you did it right, you will end up with this table:
| 1 | 7 | 113 | 179 | 791 | 1,109 | 1,253 | 7,763 | 20,227 | 125,317 | 141,589 | 198,511 | 877,219 | 1,389,577 | 22,431,743 | 157,022,201 |
| -1 | -7 | -113 | -179 | -791 | -1,109 | -1,253 | -7,763 | -20,227 | -125,317 | -141,589 | -198,511 | -877,219 | -1,389,577 | -22,431,743 | -157,022,201 |
Here are some more numbers to try:
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