18685107

素因数分解:

$3^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{907}}^1$

素因数の和:1032

約数の個数: 32

約数和(自身を含む): 31961600

約数和(自身を除く): 13276493

約数列:

[1, 3, 7, 9, 21, 27, 63, 109, 189, 327, 763, 907, 981, 2289, 2721, 2943, 6349, 6867, 8163, 19047, 20601, 24489, 57141, 98863, 171423, 296589, 692041, 889767, 2076123, 2669301, 6228369, 18685107]

約数ペア:

[(1, 18685107), (3, 6228369), (7, 2669301), (9, 2076123), (21, 889767), (27, 692041), (63, 296589), (109, 171423), (189, 98863), (327, 57141), (763, 24489), (907, 20601), (981, 19047), (2289, 8163), (2721, 6867), (2943, 6349)]