Is 980 a deficient number and what is its deficiency?

Is 980 a deficient number?

Here we will explain and calculate if 980 is a deficient number and its deficiency if applicable.

980 is a deficient number if the sum of its proper divisors is less than 980.

The sum of its proper divisors is calculated as follows: 1 + 2 + 4 + 5 + 7 + 10 + 14 + 20 + 28 + 35 + 49 + 70 + 98 + 140 + 196 + 245 + 490 = 1414.

1414 is not less than 980. Therefore, 980 is not a deficient number.

The deficiency of 980 is 980 minus the sum of its proper divisors. Thus, the deficiency of 980 is 980 - 1414 = No Deficiency

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