21186657

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{313}}^1$

素因数の和:454

約数の個数: 32

約数和(自身を含む): 33158400

約数和(自身を除く): 11971743

約数列:

[1, 3, 9, 23, 27, 69, 109, 207, 313, 327, 621, 939, 981, 2507, 2817, 2943, 7199, 7521, 8451, 21597, 22563, 34117, 64791, 67689, 102351, 194373, 307053, 784691, 921159, 2354073, 7062219, 21186657]

約数ペア:

[(1, 21186657), (3, 7062219), (9, 2354073), (23, 921159), (27, 784691), (69, 307053), (109, 194373), (207, 102351), (313, 67689), (327, 64791), (621, 34117), (939, 22563), (981, 21597), (2507, 8451), (2817, 7521), (2943, 7199)]