20687564940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{250031}}^1$

素因数の和:250247

約数の個数: 96

約数和(自身を含む): 66536515584

約数和(自身を除く): 45848950644

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, 394, 420, 591, 788, 985, 1182, 1379, 1970, 2364, 2758, 2955, 3940, 4137, 5516, 5910, 6895, 8274, 11820, 13790, 16548, 20685, 27580, 41370, 82740, 250031, 500062, 750093, 1000124, 1250155, 1500186, 1750217, 2500310, 3000372, 3500434, 3750465, 5000620, 5250651, 7000868, 7500930, 8751085, 10501302, 15001860, 17502170, 21002604, 26253255, 35004340, 49256107, 52506510, 98512214, 105013020, 147768321, 197024428, 246280535, 295536642, 344792749, 492561070, 591073284, 689585498, 738841605, 985122140, 1034378247, 1379170996, 1477683210, 1723963745, 2068756494, 2955366420, 3447927490, 4137512988, 5171891235, 6895854980, 10343782470, 20687564940]

約数ペア:

[(1, 20687564940), (2, 10343782470), (3, 6895854980), (4, 5171891235), (5, 4137512988), (6, 3447927490), (7, 2955366420), (10, 2068756494), (12, 1723963745), (14, 1477683210), (15, 1379170996), (20, 1034378247), (21, 985122140), (28, 738841605), (30, 689585498), (35, 591073284), (42, 492561070), (60, 344792749), (70, 295536642), (84, 246280535), (105, 197024428), (140, 147768321), (197, 105013020), (210, 98512214), (394, 52506510), (420, 49256107), (591, 35004340), (788, 26253255), (985, 21002604), (1182, 17502170), (1379, 15001860), (1970, 10501302), (2364, 8751085), (2758, 7500930), (2955, 7000868), (3940, 5250651), (4137, 5000620), (5516, 3750465), (5910, 3500434), (6895, 3000372), (8274, 2500310), (11820, 1750217), (13790, 1500186), (16548, 1250155), (20685, 1000124), (27580, 750093), (41370, 500062), (82740, 250031)]