A:
Positive:
1 x 648084255 x 1296168511 x 589167525 x 259233755 x 1178335275 x 235667463 x 139975509 x 1273252315 x 279952545 x 254655093 x 127255599 x 11575
Negative:
-1 x -64808425-5 x -12961685-11 x -5891675-25 x -2592337-55 x -1178335-275 x -235667-463 x -139975-509 x -127325-2315 x -27995-2545 x -25465-5093 x -12725-5599 x -11575
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 64,808,425, 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 | 64,808,425 | |
| -1 | -64,808,425 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 64,808,425.
Example:
1 x 64,808,425 = 64,808,425
and
-1 x -64,808,425 = 64,808,425
Notice both answers equal 64,808,425
With that explanation out of the way, let's continue. Next, we take the number 64,808,425 and divide it by 2:
64,808,425 ÷ 2 = 32,404,212.5
If the quotient is a whole number, then 2 and 32,404,212.5 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 | 64,808,425 | |
| -1 | -64,808,425 |
Now, we try dividing 64,808,425 by 3:
64,808,425 ÷ 3 = 21,602,808.3333
If the quotient is a whole number, then 3 and 21,602,808.3333 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 | 64,808,425 | |
| -1 | -64,808,425 |
Let's try dividing by 4:
64,808,425 ÷ 4 = 16,202,106.25
If the quotient is a whole number, then 4 and 16,202,106.25 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 | 64,808,425 | |
| -1 | 64,808,425 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 55 | 275 | 463 | 509 | 2,315 | 2,545 | 5,093 | 5,599 | 11,575 | 12,725 | 25,465 | 27,995 | 127,325 | 139,975 | 235,667 | 1,178,335 | 2,592,337 | 5,891,675 | 12,961,685 | 64,808,425 |
| -1 | -5 | -11 | -25 | -55 | -275 | -463 | -509 | -2,315 | -2,545 | -5,093 | -5,599 | -11,575 | -12,725 | -25,465 | -27,995 | -127,325 | -139,975 | -235,667 | -1,178,335 | -2,592,337 | -5,891,675 | -12,961,685 | -64,808,425 |
Here are some more numbers to try:
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