A:
Positive:
1 x 644720455 x 1289440911 x 586109555 x 117221989 x 724405445 x 144881979 x 658554895 x 13171
Negative:
-1 x -64472045-5 x -12894409-11 x -5861095-55 x -1172219-89 x -724405-445 x -144881-979 x -65855-4895 x -13171
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 64,472,045, 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 | 64,472,045 | |
| -1 | -64,472,045 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 64,472,045.
Example:
1 x 64,472,045 = 64,472,045
and
-1 x -64,472,045 = 64,472,045
Notice both answers equal 64,472,045
With that explanation out of the way, let's continue. Next, we take the number 64,472,045 and divide it by 2:
64,472,045 ÷ 2 = 32,236,022.5
If the quotient is a whole number, then 2 and 32,236,022.5 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 | 64,472,045 | |
| -1 | -64,472,045 |
Now, we try dividing 64,472,045 by 3:
64,472,045 ÷ 3 = 21,490,681.6667
If the quotient is a whole number, then 3 and 21,490,681.6667 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 | 64,472,045 | |
| -1 | -64,472,045 |
Let's try dividing by 4:
64,472,045 ÷ 4 = 16,118,011.25
If the quotient is a whole number, then 4 and 16,118,011.25 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 | 64,472,045 | |
| -1 | 64,472,045 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 89 | 445 | 979 | 4,895 | 13,171 | 65,855 | 144,881 | 724,405 | 1,172,219 | 5,861,095 | 12,894,409 | 64,472,045 |
| -1 | -5 | -11 | -55 | -89 | -445 | -979 | -4,895 | -13,171 | -65,855 | -144,881 | -724,405 | -1,172,219 | -5,861,095 | -12,894,409 | -64,472,045 |
Here are some more numbers to try:
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