Is 730 a deficient number and what is its deficiency?

Is 730 a deficient number?

Here we will explain and calculate if 730 is a deficient number and its deficiency if applicable.

730 is a deficient number if the sum of its proper divisors is less than 730.

The sum of its proper divisors is calculated as follows: 1 + 2 + 5 + 10 + 73 + 146 + 365 = 602.

602 is less than 730. Therefore, 730 is a deficient number.

The deficiency of 730 is 730 minus the sum of its proper divisors. Thus, the deficiency of 730 is 730 - 602 = 128

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