From the Apple Press Release:

Apple® today announced it has sold over 10 million new iPhone® 6 and iPhone 6 Plus models, a new record, just three days after the launch on September 19. iPhone 6 and iPhone 6 Plus are available in the US, Australia, Canada, France, Germany, Hong Kong, Japan, Puerto Rico, Singapore and the UK and will be available in more than 20 additional countries on September 26. The new iPhones will be available in 115 countries by the end of the year.

“Sales for iPhone 6 and iPhone 6 Plus exceeded our expectations for the launch weekend, and we couldn’t be happier,” said Tim Cook, Apple’s CEO. “We would like to thank all of our customers for making this our best launch ever, shattering all previous sell-through records by a large margin. While our team managed the manufacturing ramp better than ever before, we could have sold many more iPhones with greater supply and we are working hard to fill orders as quickly as possible.”

The release did not break down sales numbers between the iPhone 6 and 6 Plus.

Looks like Apple Pay is still targeted for October rollout. This was one of the footnotes in the release:

Apple Pay will be available to iPhone 6 and iPhone 6 Plus customers in the US as a free update to iOS 8 this October.