A:
Positive:
1 x 647469855 x 1294939773 x 886945179 x 361715365 x 177389895 x 72343991 x 653354955 x 13067
Negative:
-1 x -64746985-5 x -12949397-73 x -886945-179 x -361715-365 x -177389-895 x -72343-991 x -65335-4955 x -13067
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 64,746,985, 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 | 64,746,985 | |
| -1 | -64,746,985 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 64,746,985.
Example:
1 x 64,746,985 = 64,746,985
and
-1 x -64,746,985 = 64,746,985
Notice both answers equal 64,746,985
With that explanation out of the way, let's continue. Next, we take the number 64,746,985 and divide it by 2:
64,746,985 ÷ 2 = 32,373,492.5
If the quotient is a whole number, then 2 and 32,373,492.5 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 | 64,746,985 | |
| -1 | -64,746,985 |
Now, we try dividing 64,746,985 by 3:
64,746,985 ÷ 3 = 21,582,328.3333
If the quotient is a whole number, then 3 and 21,582,328.3333 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 | 64,746,985 | |
| -1 | -64,746,985 |
Let's try dividing by 4:
64,746,985 ÷ 4 = 16,186,746.25
If the quotient is a whole number, then 4 and 16,186,746.25 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 | 64,746,985 | |
| -1 | 64,746,985 |
If you did it right, you will end up with this table:
| 1 | 5 | 73 | 179 | 365 | 895 | 991 | 4,955 | 13,067 | 65,335 | 72,343 | 177,389 | 361,715 | 886,945 | 12,949,397 | 64,746,985 |
| -1 | -5 | -73 | -179 | -365 | -895 | -991 | -4,955 | -13,067 | -65,335 | -72,343 | -177,389 | -361,715 | -886,945 | -12,949,397 | -64,746,985 |
Here are some more numbers to try:
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