18722543

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:315

約数の個数: 24

約数和(自身を含む): 23408640

約数和(自身を除く): 4686097

約数列:

[1, 7, 19, 31, 133, 217, 239, 361, 589, 1673, 2527, 4123, 4541, 7409, 11191, 31787, 51863, 78337, 86279, 140771, 603953, 985397, 2674649, 18722543]

約数ペア:

[(1, 18722543), (7, 2674649), (19, 985397), (31, 603953), (133, 140771), (217, 86279), (239, 78337), (361, 51863), (589, 31787), (1673, 11191), (2527, 7409), (4123, 4541)]