A:
Positive:
1 x 2577837437 x 3682624961 x 4225963427 x 603709569 x 4530471061 x 2429633983 x 647217427 x 34709
Negative:
-1 x -257783743-7 x -36826249-61 x -4225963-427 x -603709-569 x -453047-1061 x -242963-3983 x -64721-7427 x -34709
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 257,783,743, 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 | 257,783,743 | |
| -1 | -257,783,743 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 257,783,743.
Example:
1 x 257,783,743 = 257,783,743
and
-1 x -257,783,743 = 257,783,743
Notice both answers equal 257,783,743
With that explanation out of the way, let's continue. Next, we take the number 257,783,743 and divide it by 2:
257,783,743 ÷ 2 = 128,891,871.5
If the quotient is a whole number, then 2 and 128,891,871.5 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 | 257,783,743 | |
| -1 | -257,783,743 |
Now, we try dividing 257,783,743 by 3:
257,783,743 ÷ 3 = 85,927,914.3333
If the quotient is a whole number, then 3 and 85,927,914.3333 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 | 257,783,743 | |
| -1 | -257,783,743 |
Let's try dividing by 4:
257,783,743 ÷ 4 = 64,445,935.75
If the quotient is a whole number, then 4 and 64,445,935.75 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 | 257,783,743 | |
| -1 | 257,783,743 |
If you did it right, you will end up with this table:
| 1 | 7 | 61 | 427 | 569 | 1,061 | 3,983 | 7,427 | 34,709 | 64,721 | 242,963 | 453,047 | 603,709 | 4,225,963 | 36,826,249 | 257,783,743 |
| -1 | -7 | -61 | -427 | -569 | -1,061 | -3,983 | -7,427 | -34,709 | -64,721 | -242,963 | -453,047 | -603,709 | -4,225,963 | -36,826,249 | -257,783,743 |
Here are some more numbers to try:
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