A:
Positive:
1 x 384726655 x 76945337 x 549609511 x 349751535 x 109921955 x 69950377 x 499645385 x 99929
Negative:
-1 x -38472665-5 x -7694533-7 x -5496095-11 x -3497515-35 x -1099219-55 x -699503-77 x -499645-385 x -99929
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 38,472,665, 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 | 38,472,665 | |
| -1 | -38,472,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 38,472,665.
Example:
1 x 38,472,665 = 38,472,665
and
-1 x -38,472,665 = 38,472,665
Notice both answers equal 38,472,665
With that explanation out of the way, let's continue. Next, we take the number 38,472,665 and divide it by 2:
38,472,665 ÷ 2 = 19,236,332.5
If the quotient is a whole number, then 2 and 19,236,332.5 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 | 38,472,665 | |
| -1 | -38,472,665 |
Now, we try dividing 38,472,665 by 3:
38,472,665 ÷ 3 = 12,824,221.6667
If the quotient is a whole number, then 3 and 12,824,221.6667 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 | 38,472,665 | |
| -1 | -38,472,665 |
Let's try dividing by 4:
38,472,665 ÷ 4 = 9,618,166.25
If the quotient is a whole number, then 4 and 9,618,166.25 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 | 38,472,665 | |
| -1 | 38,472,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 385 | 99,929 | 499,645 | 699,503 | 1,099,219 | 3,497,515 | 5,496,095 | 7,694,533 | 38,472,665 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -385 | -99,929 | -499,645 | -699,503 | -1,099,219 | -3,497,515 | -5,496,095 | -7,694,533 | -38,472,665 |
Here are some more numbers to try:
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