A:
Positive:
1 x 385187117 x 550267311 x 350170177 x 500243251 x 1534611757 x 219231993 x 193272761 x 13951
Negative:
-1 x -38518711-7 x -5502673-11 x -3501701-77 x -500243-251 x -153461-1757 x -21923-1993 x -19327-2761 x -13951
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 38,518,711, 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 | 38,518,711 | |
| -1 | -38,518,711 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 38,518,711.
Example:
1 x 38,518,711 = 38,518,711
and
-1 x -38,518,711 = 38,518,711
Notice both answers equal 38,518,711
With that explanation out of the way, let's continue. Next, we take the number 38,518,711 and divide it by 2:
38,518,711 ÷ 2 = 19,259,355.5
If the quotient is a whole number, then 2 and 19,259,355.5 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 | 38,518,711 | |
| -1 | -38,518,711 |
Now, we try dividing 38,518,711 by 3:
38,518,711 ÷ 3 = 12,839,570.3333
If the quotient is a whole number, then 3 and 12,839,570.3333 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 | 38,518,711 | |
| -1 | -38,518,711 |
Let's try dividing by 4:
38,518,711 ÷ 4 = 9,629,677.75
If the quotient is a whole number, then 4 and 9,629,677.75 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 | 38,518,711 | |
| -1 | 38,518,711 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 251 | 1,757 | 1,993 | 2,761 | 13,951 | 19,327 | 21,923 | 153,461 | 500,243 | 3,501,701 | 5,502,673 | 38,518,711 |
| -1 | -7 | -11 | -77 | -251 | -1,757 | -1,993 | -2,761 | -13,951 | -19,327 | -21,923 | -153,461 | -500,243 | -3,501,701 | -5,502,673 | -38,518,711 |
Here are some more numbers to try:
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