A:
Positive:
1 x 512385655 x 102477137 x 731979535 x 146395949 x 1045685245 x 209137283 x 181055739 x 693351415 x 362111981 x 258653695 x 138675173 x 9905
Negative:
-1 x -51238565-5 x -10247713-7 x -7319795-35 x -1463959-49 x -1045685-245 x -209137-283 x -181055-739 x -69335-1415 x -36211-1981 x -25865-3695 x -13867-5173 x -9905
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 51,238,565, 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 | 51,238,565 | |
| -1 | -51,238,565 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,238,565.
Example:
1 x 51,238,565 = 51,238,565
and
-1 x -51,238,565 = 51,238,565
Notice both answers equal 51,238,565
With that explanation out of the way, let's continue. Next, we take the number 51,238,565 and divide it by 2:
51,238,565 ÷ 2 = 25,619,282.5
If the quotient is a whole number, then 2 and 25,619,282.5 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 | 51,238,565 | |
| -1 | -51,238,565 |
Now, we try dividing 51,238,565 by 3:
51,238,565 ÷ 3 = 17,079,521.6667
If the quotient is a whole number, then 3 and 17,079,521.6667 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 | 51,238,565 | |
| -1 | -51,238,565 |
Let's try dividing by 4:
51,238,565 ÷ 4 = 12,809,641.25
If the quotient is a whole number, then 4 and 12,809,641.25 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 | 51,238,565 | |
| -1 | 51,238,565 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 245 | 283 | 739 | 1,415 | 1,981 | 3,695 | 5,173 | 9,905 | 13,867 | 25,865 | 36,211 | 69,335 | 181,055 | 209,137 | 1,045,685 | 1,463,959 | 7,319,795 | 10,247,713 | 51,238,565 |
| -1 | -5 | -7 | -35 | -49 | -245 | -283 | -739 | -1,415 | -1,981 | -3,695 | -5,173 | -9,905 | -13,867 | -25,865 | -36,211 | -69,335 | -181,055 | -209,137 | -1,045,685 | -1,463,959 | -7,319,795 | -10,247,713 | -51,238,565 |
Here are some more numbers to try:
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