A:
Positive:
1 x 74787237 x 106838919 x 39361729 x 25788749 x 152627133 x 56231203 x 36841277 x 26999551 x 13573931 x 80331421 x 52631939 x 3857
Negative:
-1 x -7478723-7 x -1068389-19 x -393617-29 x -257887-49 x -152627-133 x -56231-203 x -36841-277 x -26999-551 x -13573-931 x -8033-1421 x -5263-1939 x -3857
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 7,478,723, 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 | 7,478,723 | |
| -1 | -7,478,723 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,478,723.
Example:
1 x 7,478,723 = 7,478,723
and
-1 x -7,478,723 = 7,478,723
Notice both answers equal 7,478,723
With that explanation out of the way, let's continue. Next, we take the number 7,478,723 and divide it by 2:
7,478,723 ÷ 2 = 3,739,361.5
If the quotient is a whole number, then 2 and 3,739,361.5 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 | 7,478,723 | |
| -1 | -7,478,723 |
Now, we try dividing 7,478,723 by 3:
7,478,723 ÷ 3 = 2,492,907.6667
If the quotient is a whole number, then 3 and 2,492,907.6667 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 | 7,478,723 | |
| -1 | -7,478,723 |
Let's try dividing by 4:
7,478,723 ÷ 4 = 1,869,680.75
If the quotient is a whole number, then 4 and 1,869,680.75 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 | 7,478,723 | |
| -1 | 7,478,723 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 29 | 49 | 133 | 203 | 277 | 551 | 931 | 1,421 | 1,939 | 3,857 | 5,263 | 8,033 | 13,573 | 26,999 | 36,841 | 56,231 | 152,627 | 257,887 | 393,617 | 1,068,389 | 7,478,723 |
| -1 | -7 | -19 | -29 | -49 | -133 | -203 | -277 | -551 | -931 | -1,421 | -1,939 | -3,857 | -5,263 | -8,033 | -13,573 | -26,999 | -36,841 | -56,231 | -152,627 | -257,887 | -393,617 | -1,068,389 | -7,478,723 |
Here are some more numbers to try:
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