A:
Positive:
1 x 1245765117 x 73280323 x 541637151 x 82501211 x 59041391 x 318612567 x 48533473 x 3587
Negative:
-1 x -12457651-17 x -732803-23 x -541637-151 x -82501-211 x -59041-391 x -31861-2567 x -4853-3473 x -3587
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 12,457,651, 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 | 12,457,651 | |
| -1 | -12,457,651 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,457,651.
Example:
1 x 12,457,651 = 12,457,651
and
-1 x -12,457,651 = 12,457,651
Notice both answers equal 12,457,651
With that explanation out of the way, let's continue. Next, we take the number 12,457,651 and divide it by 2:
12,457,651 ÷ 2 = 6,228,825.5
If the quotient is a whole number, then 2 and 6,228,825.5 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 | 12,457,651 | |
| -1 | -12,457,651 |
Now, we try dividing 12,457,651 by 3:
12,457,651 ÷ 3 = 4,152,550.3333
If the quotient is a whole number, then 3 and 4,152,550.3333 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 | 12,457,651 | |
| -1 | -12,457,651 |
Let's try dividing by 4:
12,457,651 ÷ 4 = 3,114,412.75
If the quotient is a whole number, then 4 and 3,114,412.75 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 | 12,457,651 | |
| -1 | 12,457,651 |
If you did it right, you will end up with this table:
| 1 | 17 | 23 | 151 | 211 | 391 | 2,567 | 3,473 | 3,587 | 4,853 | 31,861 | 59,041 | 82,501 | 541,637 | 732,803 | 12,457,651 |
| -1 | -17 | -23 | -151 | -211 | -391 | -2,567 | -3,473 | -3,587 | -4,853 | -31,861 | -59,041 | -82,501 | -541,637 | -732,803 | -12,457,651 |
Here are some more numbers to try:
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