🧩 因数计算器Factor Calculator
列出一个整数的全部因数、因数对、因数个数与和，并给出质因数分解。List all factors and factor pairs of a whole number, count and sum them, and show its prime factorization.
使用说明与常见问题How-to & FAQ
「因数计算器」是什么？What is the Factor Calculator tool?
列出一个整数的全部因数、因数对、因数个数与和，并给出质因数分解。List all factors and factor pairs of a whole number, count and sum them, and show its prime factorization.
如何使用「因数计算器」？How do I use the Factor Calculator tool?
在「因数计算器」中，填写「整数 n」等参数，结果会随输入实时计算并显示在下方。In the Factor Calculator: Fill in "Whole number n"; results are recalculated instantly as you type.
计算精度如何？How precise are the results?
「因数计算器」使用 JavaScript 双精度浮点数（约 15–16 位有效数字）；极大或极小的数值可能存在精度误差。The Factor Calculator uses double-precision floating point (about 15–16 significant digits); very large or very small values may lose precision.
「因数计算器」免费吗？需要注册吗？Is the Factor Calculator free? Do I need an account?
「因数计算器」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Factor Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.