can I chain sort and filter js code example

Example 1: javascript factor chain

function factorChain(arr) {
	for (let i = 0; i < arr.length - 1; i++) {
		if ((arr[i + 1] % arr[i]))
			return false
	}
	return true
}

Example 2: javascript factor chain

function factorChain(num) {
 let n = num.slice(num.length - 1, num.length)[0]
 return [...Array(n + 1).keys()]
	 .filter(v => n % v === 0)
	 .map((v, i) => v === num[i])[0]
}