输入两个整数A和B，求A的B次方的因子和，结果对1000000007取模。

def mod_exp(base, exp, mod):result = 1while exp > 0:if exp % 2 == 1:result = (result * base) % modbase = (base * base) % modexp //= 2return resultdef sum_of_factors(n):total = 0limit = int(n**0.5)for i in range(1, limit + 1):if n % i == 0:total += iif i != n // i:  # 如果是不同的因子，添加两个因子total += n // ireturn totaldef main(A, B):MOD = 1000000007power_value = mod_exp(A, B, MOD)factors_sum = sum_of_factors(power_value) % MODreturn factors_sum# 示例
A = 2
B = 3
result = main(A, B)
print(result)