A:
Positive:
1 x 16800255 x 33600517 x 9882525 x 6720159 x 2847567 x 2507585 x 19765295 x 5695335 x 5015425 x 39531003 x 16751139 x 1475
Negative:
-1 x -1680025-5 x -336005-17 x -98825-25 x -67201-59 x -28475-67 x -25075-85 x -19765-295 x -5695-335 x -5015-425 x -3953-1003 x -1675-1139 x -1475
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 1,680,025, 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 | 1,680,025 | |
| -1 | -1,680,025 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,680,025.
Example:
1 x 1,680,025 = 1,680,025
and
-1 x -1,680,025 = 1,680,025
Notice both answers equal 1,680,025
With that explanation out of the way, let's continue. Next, we take the number 1,680,025 and divide it by 2:
1,680,025 ÷ 2 = 840,012.5
If the quotient is a whole number, then 2 and 840,012.5 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 | 1,680,025 | |
| -1 | -1,680,025 |
Now, we try dividing 1,680,025 by 3:
1,680,025 ÷ 3 = 560,008.3333
If the quotient is a whole number, then 3 and 560,008.3333 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 | 1,680,025 | |
| -1 | -1,680,025 |
Let's try dividing by 4:
1,680,025 ÷ 4 = 420,006.25
If the quotient is a whole number, then 4 and 420,006.25 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 | 1,680,025 | |
| -1 | 1,680,025 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 25 | 59 | 67 | 85 | 295 | 335 | 425 | 1,003 | 1,139 | 1,475 | 1,675 | 3,953 | 5,015 | 5,695 | 19,765 | 25,075 | 28,475 | 67,201 | 98,825 | 336,005 | 1,680,025 |
| -1 | -5 | -17 | -25 | -59 | -67 | -85 | -295 | -335 | -425 | -1,003 | -1,139 | -1,475 | -1,675 | -3,953 | -5,015 | -5,695 | -19,765 | -25,075 | -28,475 | -67,201 | -98,825 | -336,005 | -1,680,025 |
Here are some more numbers to try:
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