A:
Positive:
1 x 124205277 x 177436167 x 18538171 x 174937373 x 33299469 x 26483497 x 249912611 x 4757
Negative:
-1 x -12420527-7 x -1774361-67 x -185381-71 x -174937-373 x -33299-469 x -26483-497 x -24991-2611 x -4757
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 12,420,527, 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 | 12,420,527 | |
| -1 | -12,420,527 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,420,527.
Example:
1 x 12,420,527 = 12,420,527
and
-1 x -12,420,527 = 12,420,527
Notice both answers equal 12,420,527
With that explanation out of the way, let's continue. Next, we take the number 12,420,527 and divide it by 2:
12,420,527 ÷ 2 = 6,210,263.5
If the quotient is a whole number, then 2 and 6,210,263.5 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 | 12,420,527 | |
| -1 | -12,420,527 |
Now, we try dividing 12,420,527 by 3:
12,420,527 ÷ 3 = 4,140,175.6667
If the quotient is a whole number, then 3 and 4,140,175.6667 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 | 12,420,527 | |
| -1 | -12,420,527 |
Let's try dividing by 4:
12,420,527 ÷ 4 = 3,105,131.75
If the quotient is a whole number, then 4 and 3,105,131.75 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 | 12,420,527 | |
| -1 | 12,420,527 |
If you did it right, you will end up with this table:
| 1 | 7 | 67 | 71 | 373 | 469 | 497 | 2,611 | 4,757 | 24,991 | 26,483 | 33,299 | 174,937 | 185,381 | 1,774,361 | 12,420,527 |
| -1 | -7 | -67 | -71 | -373 | -469 | -497 | -2,611 | -4,757 | -24,991 | -26,483 | -33,299 | -174,937 | -185,381 | -1,774,361 | -12,420,527 |
Here are some more numbers to try:
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