[Feature] Add Abundant Number Calculator

[sharmi4590]

Description

Abundant number: A number is called abundant if the sum of its proper divisors is greater than the number itself. For example, 12 is an abundant number because its proper divisors are 1, 2, 3, 4, and 6, and 1 + 2 + 3 + 4 + 6 = 16, which is greater than 12.

Screenshots

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Checklist

• [X] I have checked the existing issues.
• [X] I follow Contributing Guidelines of this project.
• [X] I am a GSSOC'24 contributor.
• [ ] I am a IWOC'24 contributor.
• [ ] I am a JWOC'24 contributor.
• [ ] I am a SWOC'24 contributor.

Code of Conduct

• [X] I agree to follow this project's "Code of Conduct".

[github-actions[bot]]

Hey @sharmi4590, Welcome to the project CalcDiverse! 🎊 Thanks for opening an issue! 🙌 Please wait for the issue to be assigned. Happy Coding!! ✨

[Rakesh9100]

Proceed @sharmi4590

[Rakesh9100]

Provide your PR @sharmi4590