20890788

素因数分解:

$2^2\times 3^1\times {\mathrm{29}}^1\times {\mathrm{173}}^1\times {\mathrm{347}}^1$

素因数の和:556

約数の個数: 48

約数和(自身を含む): 50863680

約数和(自身を除く): 29972892

約数列:

[1, 2, 3, 4, 6, 12, 29, 58, 87, 116, 173, 174, 346, 347, 348, 519, 692, 694, 1038, 1041, 1388, 2076, 2082, 4164, 5017, 10034, 10063, 15051, 20068, 20126, 30102, 30189, 40252, 60031, 60204, 60378, 120062, 120756, 180093, 240124, 360186, 720372, 1740899, 3481798, 5222697, 6963596, 10445394, 20890788]

約数ペア:

[(1, 20890788), (2, 10445394), (3, 6963596), (4, 5222697), (6, 3481798), (12, 1740899), (29, 720372), (58, 360186), (87, 240124), (116, 180093), (173, 120756), (174, 120062), (346, 60378), (347, 60204), (348, 60031), (519, 40252), (692, 30189), (694, 30102), (1038, 20126), (1041, 20068), (1388, 15051), (2076, 10063), (2082, 10034), (4164, 5017)]