A:
Positive:
1 x 287526055 x 57505217 x 410751519 x 151329535 x 82150395 x 302659133 x 216185665 x 43237
Negative:
-1 x -28752605-5 x -5750521-7 x -4107515-19 x -1513295-35 x -821503-95 x -302659-133 x -216185-665 x -43237
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 28,752,605, 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 | 28,752,605 | |
| -1 | -28,752,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,752,605.
Example:
1 x 28,752,605 = 28,752,605
and
-1 x -28,752,605 = 28,752,605
Notice both answers equal 28,752,605
With that explanation out of the way, let's continue. Next, we take the number 28,752,605 and divide it by 2:
28,752,605 ÷ 2 = 14,376,302.5
If the quotient is a whole number, then 2 and 14,376,302.5 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 | 28,752,605 | |
| -1 | -28,752,605 |
Now, we try dividing 28,752,605 by 3:
28,752,605 ÷ 3 = 9,584,201.6667
If the quotient is a whole number, then 3 and 9,584,201.6667 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 | 28,752,605 | |
| -1 | -28,752,605 |
Let's try dividing by 4:
28,752,605 ÷ 4 = 7,188,151.25
If the quotient is a whole number, then 4 and 7,188,151.25 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 | 28,752,605 | |
| -1 | 28,752,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 19 | 35 | 95 | 133 | 665 | 43,237 | 216,185 | 302,659 | 821,503 | 1,513,295 | 4,107,515 | 5,750,521 | 28,752,605 |
| -1 | -5 | -7 | -19 | -35 | -95 | -133 | -665 | -43,237 | -216,185 | -302,659 | -821,503 | -1,513,295 | -4,107,515 | -5,750,521 | -28,752,605 |
Here are some more numbers to try:
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