perplexus.info :: Numbers : Increase in number of factors.

Increase in number of factors. (Posted on 2010-10-05)

If n has 15 factors (1 and n inclusive ) and 2n has 20 factors. What is the number of factors of 4n?

Also, what can be the number of factors of 5n ?

See The Solution Submitted by Vishal Gupta

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Subject	Author	Date
Puzzle Answer	K Sengupta	2022-07-10 21:26:19
4n will have precisely 25 factors.	K Sengupta	2022-07-10 21:24:16
solution	Charlie	2010-10-05 17:22:19
Solution	Jer	2010-10-05 14:55:03
Possible solution	broll	2010-10-05 14:27:58

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