A:
Positive:
1 x 1235572755 x 2471145517 x 726807525 x 494229143 x 287342585 x 1453615215 x 574685425 x 290723731 x 1690251075 x 1149373655 x 338056761 x 18275
Negative:
-1 x -123557275-5 x -24711455-17 x -7268075-25 x -4942291-43 x -2873425-85 x -1453615-215 x -574685-425 x -290723-731 x -169025-1075 x -114937-3655 x -33805-6761 x -18275
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 123,557,275, 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 | 123,557,275 | |
| -1 | -123,557,275 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 123,557,275.
Example:
1 x 123,557,275 = 123,557,275
and
-1 x -123,557,275 = 123,557,275
Notice both answers equal 123,557,275
With that explanation out of the way, let's continue. Next, we take the number 123,557,275 and divide it by 2:
123,557,275 ÷ 2 = 61,778,637.5
If the quotient is a whole number, then 2 and 61,778,637.5 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 | 123,557,275 | |
| -1 | -123,557,275 |
Now, we try dividing 123,557,275 by 3:
123,557,275 ÷ 3 = 41,185,758.3333
If the quotient is a whole number, then 3 and 41,185,758.3333 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 | 123,557,275 | |
| -1 | -123,557,275 |
Let's try dividing by 4:
123,557,275 ÷ 4 = 30,889,318.75
If the quotient is a whole number, then 4 and 30,889,318.75 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 | 123,557,275 | |
| -1 | 123,557,275 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 25 | 43 | 85 | 215 | 425 | 731 | 1,075 | 3,655 | 6,761 | 18,275 | 33,805 | 114,937 | 169,025 | 290,723 | 574,685 | 1,453,615 | 2,873,425 | 4,942,291 | 7,268,075 | 24,711,455 | 123,557,275 |
| -1 | -5 | -17 | -25 | -43 | -85 | -215 | -425 | -731 | -1,075 | -3,655 | -6,761 | -18,275 | -33,805 | -114,937 | -169,025 | -290,723 | -574,685 | -1,453,615 | -2,873,425 | -4,942,291 | -7,268,075 | -24,711,455 | -123,557,275 |
Here are some more numbers to try:
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