A:
Positive:
1 x 390025797 x 557179711 x 354568949 x 79597177 x 506527269 x 144991539 x 723611883 x 207132959 x 13181
Negative:
-1 x -39002579-7 x -5571797-11 x -3545689-49 x -795971-77 x -506527-269 x -144991-539 x -72361-1883 x -20713-2959 x -13181
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 39,002,579, 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 | 39,002,579 | |
| -1 | -39,002,579 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 39,002,579.
Example:
1 x 39,002,579 = 39,002,579
and
-1 x -39,002,579 = 39,002,579
Notice both answers equal 39,002,579
With that explanation out of the way, let's continue. Next, we take the number 39,002,579 and divide it by 2:
39,002,579 ÷ 2 = 19,501,289.5
If the quotient is a whole number, then 2 and 19,501,289.5 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 | 39,002,579 | |
| -1 | -39,002,579 |
Now, we try dividing 39,002,579 by 3:
39,002,579 ÷ 3 = 13,000,859.6667
If the quotient is a whole number, then 3 and 13,000,859.6667 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 | 39,002,579 | |
| -1 | -39,002,579 |
Let's try dividing by 4:
39,002,579 ÷ 4 = 9,750,644.75
If the quotient is a whole number, then 4 and 9,750,644.75 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 | 39,002,579 | |
| -1 | 39,002,579 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 49 | 77 | 269 | 539 | 1,883 | 2,959 | 13,181 | 20,713 | 72,361 | 144,991 | 506,527 | 795,971 | 3,545,689 | 5,571,797 | 39,002,579 |
| -1 | -7 | -11 | -49 | -77 | -269 | -539 | -1,883 | -2,959 | -13,181 | -20,713 | -72,361 | -144,991 | -506,527 | -795,971 | -3,545,689 | -5,571,797 | -39,002,579 |
Here are some more numbers to try:
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