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April 1, 2016

Number of factors of 1800 | Tomato Problem 95

This is a problem number 95 from TOMATO based on finding the Number of factors of 1800.

Problem
The number of different factors of $1800$ equals:
(A) $12$; (B) $210$; (C) $36$; (D) $18$;

Discussion:
We may factor $1800$ as $2^3 \times 3^2 \times 5^2 $
Then the number of factors is: $(3+1) \times (2+1) \times (2+1) = 36 $

Hence answer is $36$.

Chatuspathi:

  • What is this topic: Number Theory
  • What are some of the associated concept: Number Theoretic Functions
  • Where can learn these topics: Cheenta I.S.I. & C.M.I. course, discusses these topics in the ‘Number Theory’ module.
  • Book Suggestions: Elementary Number Theory by David Burton

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