Is 1020 a deficient number and what is its deficiency?

Is 1020 a deficient number?

Here we will explain and calculate if 1020 is a deficient number and its deficiency if applicable.

1020 is a deficient number if the sum of its proper divisors is less than 1020.

The sum of its proper divisors is calculated as follows: 1 + 2 + 3 + 4 + 5 + 6 + 10 + 12 + 15 + 17 + 20 + 30 + 34 + 51 + 60 + 68 + 85 + 102 + 170 + 204 + 255 + 340 + 510 = 2004.

2004 is not less than 1020. Therefore, 1020 is not a deficient number.

The deficiency of 1020 is 1020 minus the sum of its proper divisors. Thus, the deficiency of 1020 is 1020 - 2004 = No Deficiency

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