A:
Positive:
1 x 648455755 x 1296911519 x 341292525 x 259382395 x 682585211 x 307325475 x 136517647 x 1002251055 x 614653235 x 200454009 x 161755275 x 12293
Negative:
-1 x -64845575-5 x -12969115-19 x -3412925-25 x -2593823-95 x -682585-211 x -307325-475 x -136517-647 x -100225-1055 x -61465-3235 x -20045-4009 x -16175-5275 x -12293
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 64,845,575, 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 | 64,845,575 | |
| -1 | -64,845,575 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 64,845,575.
Example:
1 x 64,845,575 = 64,845,575
and
-1 x -64,845,575 = 64,845,575
Notice both answers equal 64,845,575
With that explanation out of the way, let's continue. Next, we take the number 64,845,575 and divide it by 2:
64,845,575 ÷ 2 = 32,422,787.5
If the quotient is a whole number, then 2 and 32,422,787.5 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 | 64,845,575 | |
| -1 | -64,845,575 |
Now, we try dividing 64,845,575 by 3:
64,845,575 ÷ 3 = 21,615,191.6667
If the quotient is a whole number, then 3 and 21,615,191.6667 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 | 64,845,575 | |
| -1 | -64,845,575 |
Let's try dividing by 4:
64,845,575 ÷ 4 = 16,211,393.75
If the quotient is a whole number, then 4 and 16,211,393.75 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 | 64,845,575 | |
| -1 | 64,845,575 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 25 | 95 | 211 | 475 | 647 | 1,055 | 3,235 | 4,009 | 5,275 | 12,293 | 16,175 | 20,045 | 61,465 | 100,225 | 136,517 | 307,325 | 682,585 | 2,593,823 | 3,412,925 | 12,969,115 | 64,845,575 |
| -1 | -5 | -19 | -25 | -95 | -211 | -475 | -647 | -1,055 | -3,235 | -4,009 | -5,275 | -12,293 | -16,175 | -20,045 | -61,465 | -100,225 | -136,517 | -307,325 | -682,585 | -2,593,823 | -3,412,925 | -12,969,115 | -64,845,575 |
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