A:
Positive:
1 x 386977455 x 773954929 x 133440537 x 1045885145 x 266881185 x 2091771073 x 360655365 x 7213
Negative:
-1 x -38697745-5 x -7739549-29 x -1334405-37 x -1045885-145 x -266881-185 x -209177-1073 x -36065-5365 x -7213
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 38,697,745, 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 | 38,697,745 | |
| -1 | -38,697,745 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 38,697,745.
Example:
1 x 38,697,745 = 38,697,745
and
-1 x -38,697,745 = 38,697,745
Notice both answers equal 38,697,745
With that explanation out of the way, let's continue. Next, we take the number 38,697,745 and divide it by 2:
38,697,745 ÷ 2 = 19,348,872.5
If the quotient is a whole number, then 2 and 19,348,872.5 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 | 38,697,745 | |
| -1 | -38,697,745 |
Now, we try dividing 38,697,745 by 3:
38,697,745 ÷ 3 = 12,899,248.3333
If the quotient is a whole number, then 3 and 12,899,248.3333 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 | 38,697,745 | |
| -1 | -38,697,745 |
Let's try dividing by 4:
38,697,745 ÷ 4 = 9,674,436.25
If the quotient is a whole number, then 4 and 9,674,436.25 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 | 38,697,745 | |
| -1 | 38,697,745 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 37 | 145 | 185 | 1,073 | 5,365 | 7,213 | 36,065 | 209,177 | 266,881 | 1,045,885 | 1,334,405 | 7,739,549 | 38,697,745 |
| -1 | -5 | -29 | -37 | -145 | -185 | -1,073 | -5,365 | -7,213 | -36,065 | -209,177 | -266,881 | -1,045,885 | -1,334,405 | -7,739,549 | -38,697,745 |
Here are some more numbers to try:
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