20767740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{251}}^1$

素因数の和:467

約数の個数: 96

約数和(自身を含む): 67060224

約数和(自身を除く): 46292484

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 197, 210, 251, 394, 420, 502, 591, 753, 788, 985, 1004, 1182, 1255, 1379, 1506, 1757, 1970, 2364, 2510, 2758, 2955, 3012, 3514, 3765, 3940, 4137, 5020, 5271, 5516, 5910, 6895, 7028, 7530, 8274, 8785, 10542, 11820, 13790, 15060, 16548, 17570, 20685, 21084, 26355, 27580, 35140, 41370, 49447, 52710, 82740, 98894, 105420, 148341, 197788, 247235, 296682, 346129, 494470, 593364, 692258, 741705, 988940, 1038387, 1384516, 1483410, 1730645, 2076774, 2966820, 3461290, 4153548, 5191935, 6922580, 10383870, 20767740]

約数ペア:

[(1, 20767740), (2, 10383870), (3, 6922580), (4, 5191935), (5, 4153548), (6, 3461290), (7, 2966820), (10, 2076774), (12, 1730645), (14, 1483410), (15, 1384516), (20, 1038387), (21, 988940), (28, 741705), (30, 692258), (35, 593364), (42, 494470), (60, 346129), (70, 296682), (84, 247235), (105, 197788), (140, 148341), (197, 105420), (210, 98894), (251, 82740), (394, 52710), (420, 49447), (502, 41370), (591, 35140), (753, 27580), (788, 26355), (985, 21084), (1004, 20685), (1182, 17570), (1255, 16548), (1379, 15060), (1506, 13790), (1757, 11820), (1970, 10542), (2364, 8785), (2510, 8274), (2758, 7530), (2955, 7028), (3012, 6895), (3514, 5910), (3765, 5516), (3940, 5271), (4137, 5020)]