A:
Positive:
1 x 108704055 x 21740817 x 155291513 x 83618535 x 31058349 x 22184565 x 16723791 x 119455245 x 44369455 x 23891637 x 170653185 x 3413
Negative:
-1 x -10870405-5 x -2174081-7 x -1552915-13 x -836185-35 x -310583-49 x -221845-65 x -167237-91 x -119455-245 x -44369-455 x -23891-637 x -17065-3185 x -3413
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 10,870,405, 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 | 10,870,405 | |
| -1 | -10,870,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 10,870,405.
Example:
1 x 10,870,405 = 10,870,405
and
-1 x -10,870,405 = 10,870,405
Notice both answers equal 10,870,405
With that explanation out of the way, let's continue. Next, we take the number 10,870,405 and divide it by 2:
10,870,405 ÷ 2 = 5,435,202.5
If the quotient is a whole number, then 2 and 5,435,202.5 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 | 10,870,405 | |
| -1 | -10,870,405 |
Now, we try dividing 10,870,405 by 3:
10,870,405 ÷ 3 = 3,623,468.3333
If the quotient is a whole number, then 3 and 3,623,468.3333 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 | 10,870,405 | |
| -1 | -10,870,405 |
Let's try dividing by 4:
10,870,405 ÷ 4 = 2,717,601.25
If the quotient is a whole number, then 4 and 2,717,601.25 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 | 10,870,405 | |
| -1 | 10,870,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 13 | 35 | 49 | 65 | 91 | 245 | 455 | 637 | 3,185 | 3,413 | 17,065 | 23,891 | 44,369 | 119,455 | 167,237 | 221,845 | 310,583 | 836,185 | 1,552,915 | 2,174,081 | 10,870,405 |
| -1 | -5 | -7 | -13 | -35 | -49 | -65 | -91 | -245 | -455 | -637 | -3,185 | -3,413 | -17,065 | -23,891 | -44,369 | -119,455 | -167,237 | -221,845 | -310,583 | -836,185 | -1,552,915 | -2,174,081 | -10,870,405 |
Here are some more numbers to try:
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