If your brand's official Instagram account has a large following, you might want to check who’s following you to verify if they are your actual influencers. Instagram makes it easy to export this data. Here’s a simple guide to help you:
Access your account using a web browser on your computer.
Click on the Menu button ("More") in the bottom-left corner. Select "Your Activity" from the options.
Click on "Download Your Information".
A new tab will open. Select "Download or Transfer Information". Choose Instagram and click Next.
Choose "Some of your information". Scroll down to find "Followers and Following" and select it. Click Next.
Choose the device to which you want to download the data and then specify the time range for the data export.
Once everything is set, you’ll see an “In Progress” notification indicating the data download has started.
After the download is complete, open the downloaded file. Navigate to the folder: "connections" > "followers and following". Locate and open the file named followers_1.html to view your follower list.