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Learn about the mathematical, scientific, and cultural significance of the number 20. Find out how 20 relates to primes, polygons, polyhedra, polytopes, sporadic groups, and more.
- twenty
- 20th, (twentieth)
- 2² × 5
- vigesimal
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Learn the meaning, pronunciation, and usage of the number twenty, as well as related words and phrases. See examples of twenty in sentences and its etymology and history.
Learn how to find the factors of 20 by pair factorization, division method and prime factorization. See the table of contents, video lesson and FAQs on the factors of 20 and its prime factors.
- 3 min
- What is the prime factorization of 20?The prime factorization of 20 is 2 × 2 × 5 or 2 2 × 5.
- Write down the positive pair factors of 20.The positive pair factors of 20 are (1, 20), (2, 10) and (4, 5).
- What are the negative pair factors of 20?The negative pair factors of 20 are (-1, -20), (-2, -10) and (-4, -5).
- Is 5 a factor of 20?Yes, 5 is a factor of 20. If 5 divides 20, it leaves the remainder 0, and hence 5 is a factor of 20.
Learn the meaning, pronunciation, and history of the cardinal number 20, as well as its slang and informal uses. Find out how to use twenty in a sentence and see related words and quizzes.
Learn about the properties, factors, and uses of the number 20 in different systems and languages. Find out why 20 is an abundant number, a base 20 system, and a polyhedron.
20/20 full episode guide offers a synopsis for every episode in case you missed a show. Browse the list of episode titles to find summary recap you need to get caught up. Visit The official 20/20 online at ABC.com. Get exclusive videos, blogs, photos, cast bios, free episodes and more.
