A:
Positive:
1 x 12766474319 x 671919723 x 5550641389 x 328187437 x 292139751 x 1699937391 x 172738947 x 14269
Negative:
-1 x -127664743-19 x -6719197-23 x -5550641-389 x -328187-437 x -292139-751 x -169993-7391 x -17273-8947 x -14269
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 127,664,743, 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 | 127,664,743 | |
| -1 | -127,664,743 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 127,664,743.
Example:
1 x 127,664,743 = 127,664,743
and
-1 x -127,664,743 = 127,664,743
Notice both answers equal 127,664,743
With that explanation out of the way, let's continue. Next, we take the number 127,664,743 and divide it by 2:
127,664,743 ÷ 2 = 63,832,371.5
If the quotient is a whole number, then 2 and 63,832,371.5 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 | 127,664,743 | |
| -1 | -127,664,743 |
Now, we try dividing 127,664,743 by 3:
127,664,743 ÷ 3 = 42,554,914.3333
If the quotient is a whole number, then 3 and 42,554,914.3333 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 | 127,664,743 | |
| -1 | -127,664,743 |
Let's try dividing by 4:
127,664,743 ÷ 4 = 31,916,185.75
If the quotient is a whole number, then 4 and 31,916,185.75 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 | 127,664,743 | |
| -1 | 127,664,743 |
If you did it right, you will end up with this table:
| 1 | 19 | 23 | 389 | 437 | 751 | 7,391 | 8,947 | 14,269 | 17,273 | 169,993 | 292,139 | 328,187 | 5,550,641 | 6,719,197 | 127,664,743 |
| -1 | -19 | -23 | -389 | -437 | -751 | -7,391 | -8,947 | -14,269 | -17,273 | -169,993 | -292,139 | -328,187 | -5,550,641 | -6,719,197 | -127,664,743 |
Here are some more numbers to try:
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