A:
Positive:
1 x 273785755 x 54757157 x 391122525 x 109514335 x 782245101 x 271075175 x 156449505 x 54215707 x 387251549 x 176752525 x 108433535 x 7745
Negative:
-1 x -27378575-5 x -5475715-7 x -3911225-25 x -1095143-35 x -782245-101 x -271075-175 x -156449-505 x -54215-707 x -38725-1549 x -17675-2525 x -10843-3535 x -7745
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 27,378,575, 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 | 27,378,575 | |
| -1 | -27,378,575 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 27,378,575.
Example:
1 x 27,378,575 = 27,378,575
and
-1 x -27,378,575 = 27,378,575
Notice both answers equal 27,378,575
With that explanation out of the way, let's continue. Next, we take the number 27,378,575 and divide it by 2:
27,378,575 ÷ 2 = 13,689,287.5
If the quotient is a whole number, then 2 and 13,689,287.5 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 | 27,378,575 | |
| -1 | -27,378,575 |
Now, we try dividing 27,378,575 by 3:
27,378,575 ÷ 3 = 9,126,191.6667
If the quotient is a whole number, then 3 and 9,126,191.6667 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 | 27,378,575 | |
| -1 | -27,378,575 |
Let's try dividing by 4:
27,378,575 ÷ 4 = 6,844,643.75
If the quotient is a whole number, then 4 and 6,844,643.75 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 | 27,378,575 | |
| -1 | 27,378,575 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 101 | 175 | 505 | 707 | 1,549 | 2,525 | 3,535 | 7,745 | 10,843 | 17,675 | 38,725 | 54,215 | 156,449 | 271,075 | 782,245 | 1,095,143 | 3,911,225 | 5,475,715 | 27,378,575 |
| -1 | -5 | -7 | -25 | -35 | -101 | -175 | -505 | -707 | -1,549 | -2,525 | -3,535 | -7,745 | -10,843 | -17,675 | -38,725 | -54,215 | -156,449 | -271,075 | -782,245 | -1,095,143 | -3,911,225 | -5,475,715 | -27,378,575 |
Here are some more numbers to try:
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