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Javascript

function decomp(n) { let primes = new Array(n + 1).fill(true); for(let i = 2; i <= n; i++) { if (primes[i]) { for(let j = i + i; j <= n; j += i) { primes[j] = false; } } } primes = Object.entries(primes).filter(i=>i[1]).splice(2).map(i=>i[0]); let factorization = {} for(let i = 0; i < primes.length; i++) { let cnt = 0; for(let cur = Math.floor(n / primes[i]); cur >= 1; cur = Math.floor(cur / primes[i])) { cnt += cur; } factorization[primes[i]] = cnt; } return Object.entries(factorization).map(i => i[0] + (i[1] > 1 ? "^" + i[1] : "")).join(" * "); }

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Javascript