Given N, M find the :
GCD(1, 1) * GCD(1, 2) * … * GCD(1, M) * GCD(2, 1) * GCD(2, 2) * … * GCD(2, M) * … * GCD(N, 1) * GCD(N, 2) * … * GCD(N, M) modulo 10^9+7
Constraints:
1 <= N, M <= 2 * 10^7
Tried using brute force but need a help to improve.
2026-03-30 16:57:58.1774889878
Efficient way needed
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