18772019

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:243

約数の個数: 32

約数和(自身を含む): 24268800

約数和(自身を除く): 5496781

約数列:

[1, 7, 19, 29, 31, 133, 157, 203, 217, 551, 589, 899, 1099, 2983, 3857, 4123, 4553, 4867, 6293, 17081, 20881, 31871, 34069, 86507, 92473, 119567, 141143, 605549, 647311, 988001, 2681717, 18772019]

約数ペア:

[(1, 18772019), (7, 2681717), (19, 988001), (29, 647311), (31, 605549), (133, 141143), (157, 119567), (203, 92473), (217, 86507), (551, 34069), (589, 31871), (899, 20881), (1099, 17081), (2983, 6293), (3857, 4867), (4123, 4553)]