A:
Positive:
1 x 24076155 x 4815237 x 34394531 x 7766535 x 6878949 x 49135155 x 15533217 x 11095245 x 9827317 x 75951085 x 22191519 x 1585
Negative:
-1 x -2407615-5 x -481523-7 x -343945-31 x -77665-35 x -68789-49 x -49135-155 x -15533-217 x -11095-245 x -9827-317 x -7595-1085 x -2219-1519 x -1585
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 2,407,615, 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 | 2,407,615 | |
| -1 | -2,407,615 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,407,615.
Example:
1 x 2,407,615 = 2,407,615
and
-1 x -2,407,615 = 2,407,615
Notice both answers equal 2,407,615
With that explanation out of the way, let's continue. Next, we take the number 2,407,615 and divide it by 2:
2,407,615 ÷ 2 = 1,203,807.5
If the quotient is a whole number, then 2 and 1,203,807.5 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 | 2,407,615 | |
| -1 | -2,407,615 |
Now, we try dividing 2,407,615 by 3:
2,407,615 ÷ 3 = 802,538.3333
If the quotient is a whole number, then 3 and 802,538.3333 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 | 2,407,615 | |
| -1 | -2,407,615 |
Let's try dividing by 4:
2,407,615 ÷ 4 = 601,903.75
If the quotient is a whole number, then 4 and 601,903.75 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 | 2,407,615 | |
| -1 | 2,407,615 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 31 | 35 | 49 | 155 | 217 | 245 | 317 | 1,085 | 1,519 | 1,585 | 2,219 | 7,595 | 9,827 | 11,095 | 15,533 | 49,135 | 68,789 | 77,665 | 343,945 | 481,523 | 2,407,615 |
| -1 | -5 | -7 | -31 | -35 | -49 | -155 | -217 | -245 | -317 | -1,085 | -1,519 | -1,585 | -2,219 | -7,595 | -9,827 | -11,095 | -15,533 | -49,135 | -68,789 | -77,665 | -343,945 | -481,523 | -2,407,615 |
Here are some more numbers to try:
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