Q: What are the factor combinations of the number 155,670,875?

 A:
Positive:   1 x 1556708755 x 3113417525 x 6226835125 x 1245367733 x 2123751699 x 916253665 x 424758495 x 18325
Negative: -1 x -155670875-5 x -31134175-25 x -6226835-125 x -1245367-733 x -212375-1699 x -91625-3665 x -42475-8495 x -18325


How do I find the factor combinations of the number 155,670,875?

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 155,670,875, it is easier to work with a table - it's called factoring from the outside in.

Outside in Factoring

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.

1 155,670,875
-1 -155,670,875

Why are the negative numbers included?

When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,670,875.

Example:
1 x 155,670,875 = 155,670,875
and
-1 x -155,670,875 = 155,670,875
Notice both answers equal 155,670,875

With that explanation out of the way, let's continue. Next, we take the number 155,670,875 and divide it by 2:

155,670,875 ÷ 2 = 77,835,437.5

If the quotient is a whole number, then 2 and 77,835,437.5 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:

1 155,670,875
-1 -155,670,875

Now, we try dividing 155,670,875 by 3:

155,670,875 ÷ 3 = 51,890,291.6667

If the quotient is a whole number, then 3 and 51,890,291.6667 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:

1 155,670,875
-1 -155,670,875

Let's try dividing by 4:

155,670,875 ÷ 4 = 38,917,718.75

If the quotient is a whole number, then 4 and 38,917,718.75 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:

1 155,670,875
-1 155,670,875
Keep dividing by the next highest number until you cannot divide anymore.

If you did it right, you will end up with this table:

15251257331,6993,6658,49518,32542,47591,625212,3751,245,3676,226,83531,134,175155,670,875
-1-5-25-125-733-1,699-3,665-8,495-18,325-42,475-91,625-212,375-1,245,367-6,226,835-31,134,175-155,670,875

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