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export default function consecutiveNumbersSum(n: number): number {    const cached = cache.get(n);    if (typeof cached === "number") return cached;
    let ans = 0;    const n2 = n * 2;
    for (let i = 0; i * i < n2; i++) {        if (n2 % i === 0) {            if ((n2 / i - (i - 1)) % 2 === 0) {                ans++;            }        }    }    cache.set(n, ans);    return ans;}const cache = new Map<number, number>();