A:
Positive:
1 x 12889255 x 25778511 x 11717525 x 5155743 x 2997555 x 23435109 x 11825215 x 5995275 x 4687473 x 2725545 x 23651075 x 1199
Negative:
-1 x -1288925-5 x -257785-11 x -117175-25 x -51557-43 x -29975-55 x -23435-109 x -11825-215 x -5995-275 x -4687-473 x -2725-545 x -2365-1075 x -1199
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 1,288,925, 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 | 1,288,925 | |
| -1 | -1,288,925 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,288,925.
Example:
1 x 1,288,925 = 1,288,925
and
-1 x -1,288,925 = 1,288,925
Notice both answers equal 1,288,925
With that explanation out of the way, let's continue. Next, we take the number 1,288,925 and divide it by 2:
1,288,925 ÷ 2 = 644,462.5
If the quotient is a whole number, then 2 and 644,462.5 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 | 1,288,925 | |
| -1 | -1,288,925 |
Now, we try dividing 1,288,925 by 3:
1,288,925 ÷ 3 = 429,641.6667
If the quotient is a whole number, then 3 and 429,641.6667 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 | 1,288,925 | |
| -1 | -1,288,925 |
Let's try dividing by 4:
1,288,925 ÷ 4 = 322,231.25
If the quotient is a whole number, then 4 and 322,231.25 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 | 1,288,925 | |
| -1 | 1,288,925 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 43 | 55 | 109 | 215 | 275 | 473 | 545 | 1,075 | 1,199 | 2,365 | 2,725 | 4,687 | 5,995 | 11,825 | 23,435 | 29,975 | 51,557 | 117,175 | 257,785 | 1,288,925 |
| -1 | -5 | -11 | -25 | -43 | -55 | -109 | -215 | -275 | -473 | -545 | -1,075 | -1,199 | -2,365 | -2,725 | -4,687 | -5,995 | -11,825 | -23,435 | -29,975 | -51,557 | -117,175 | -257,785 | -1,288,925 |
Here are some more numbers to try:
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