The guys from webmasterworld.com decided to collect all the factors that Google teaches when ranking sites. The official representative stated (at that time) that there are more than 200 of them. While the list looks like this, it is possible that some items include several factors.
Domain
Domain age
Domain History
Keywords in the domain name
Subdomain or not
Domain placement
IP domain
IP address / server placement
Domain Sanctions History
Keyword in subdomain name
Domain registration with google local
Validity of domain registration data
Alexa Rank
Compete.com Rank
Server
Unavailability of the site
Long response site
Uptime server (not only the inaccessibility of the site and the server as a whole)
Domain owner
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History of domain master sanctions
Architecture
HTML structure
Using Header Tags
URL type
Using external CSS / JS files
Keyword in folder name
Keyword in URL parameters
Keyword in page file extension
Dynamic URLs (= URL type)
Use SSL
Using the Google Search Appliance
Content
Keyword Density
Keyword in the title tag
Keyword in Meta Description (Google refused, I decided to leave for completeness of the list)
Keyword (H, H ...)
Keyword in the body of the page
Novelty content
Semantic information (phrase-based indexing and co-occurring phrase indicators)
Taxonomic flag for the main category (transactional, informational, navigation)
Taxonomic flag for novelty
Taxonomic marketing niche flag
Keyword closer to top Title
Keyword closer to the beginning hh
The position of keywords on the page ( computer help , as an example)
Synonyms of keywords (related words) on a page / site
alt image tag
Keyword in the first words on the page
URL keyword
Keyword in file name
Keyword Lists
Keyword in HTML comments
Content change history
The ratio of code size to content
HTML validation
CSS validation
Presence of advertising
Adsense availability
The presence of Google news feeds site
Site feeds on Google Blog Search
# Of subscribers
The presence of images from the site in Google Images
Using the Google Search Appliance
Using Google's Hosted Web App
Delicious data
StumbleUpon data
Twitter data
LinkedIn data
Facebook data
Myspace data
Address (Country / City) in the body of the page
Inbound links
Site quality links
Link Page Quality
Site Age
Page age
Page Content Relevance
Link Location (Basement, Navigation, Body)
Anchor links
Title attribute links
alt picture-links tag
Domain Country
Domain Importance (.edu, .gov)
Server location
Important sites (CNN, BBC, etc)
Link from Yahoo! Directory
Link from DMOZ
Links from Wikipedia
Google Knol Articles
Using Google AdWord
Comments on Google SearchWiki
Links from Google Gmail
Using a key link in the basement (possibly negative impact)
Links from forums in the signature (possibly a negative impact)
Outbound links
Links to non-trust sites
Keyword in external link from site
Link cluster
The uniqueness of a class C address (a mystery to me)
Keyword in internal link
Internal links
Lack of internal links to the page
Placing links on the page
Anchor of the first text link
The ratio of the amount of text in the links to the general text
Sanctions
Reoptimization
Purchased links
Selling links
Spam comments
Cloaking
Hidden text
Duplicate content
Keyword glut
Manual sanctions
Sandbox effect (? = Domain age)
Re-optimizing relink site to boost PR
Links from banned domains
With a domain with penalties for spam
Using anchor links words from the blacklist (buy viagra)