20666520

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:222

約数の個数: 192

約数和(自身を含む): 78624000

約数和(自身を除く): 57957480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 59, 60, 63, 70, 72, 84, 90, 105, 118, 120, 126, 139, 140, 168, 177, 180, 210, 236, 252, 278, 280, 295, 315, 354, 360, 413, 417, 420, 472, 504, 531, 556, 590, 630, 695, 708, 826, 834, 840, 885, 973, 1062, 1112, 1180, 1239, 1251, 1260, 1390, 1416, 1652, 1668, 1770, 1946, 2065, 2085, 2124, 2360, 2478, 2502, 2520, 2655, 2780, 2919, 3304, 3336, 3540, 3717, 3892, 4130, 4170, 4248, 4865, 4956, 5004, 5310, 5560, 5838, 6195, 6255, 7080, 7434, 7784, 8201, 8260, 8340, 8757, 9730, 9912, 10008, 10620, 11676, 12390, 12510, 14595, 14868, 16402, 16520, 16680, 17514, 18585, 19460, 21240, 23352, 24603, 24780, 25020, 29190, 29736, 32804, 35028, 37170, 38920, 41005, 43785, 49206, 49560, 50040, 57407, 58380, 65608, 70056, 73809, 74340, 82010, 87570, 98412, 114814, 116760, 123015, 147618, 148680, 164020, 172221, 175140, 196824, 229628, 246030, 287035, 295236, 328040, 344442, 350280, 369045, 459256, 492060, 516663, 574070, 590472, 688884, 738090, 861105, 984120, 1033326, 1148140, 1377768, 1476180, 1722210, 2066652, 2296280, 2583315, 2952360, 3444420, 4133304, 5166630, 6888840, 10333260, 20666520]

約数ペア:

[(1, 20666520), (2, 10333260), (3, 6888840), (4, 5166630), (5, 4133304), (6, 3444420), (7, 2952360), (8, 2583315), (9, 2296280), (10, 2066652), (12, 1722210), (14, 1476180), (15, 1377768), (18, 1148140), (20, 1033326), (21, 984120), (24, 861105), (28, 738090), (30, 688884), (35, 590472), (36, 574070), (40, 516663), (42, 492060), (45, 459256), (56, 369045), (59, 350280), (60, 344442), (63, 328040), (70, 295236), (72, 287035), (84, 246030), (90, 229628), (105, 196824), (118, 175140), (120, 172221), (126, 164020), (139, 148680), (140, 147618), (168, 123015), (177, 116760), (180, 114814), (210, 98412), (236, 87570), (252, 82010), (278, 74340), (280, 73809), (295, 70056), (315, 65608), (354, 58380), (360, 57407), (413, 50040), (417, 49560), (420, 49206), (472, 43785), (504, 41005), (531, 38920), (556, 37170), (590, 35028), (630, 32804), (695, 29736), (708, 29190), (826, 25020), (834, 24780), (840, 24603), (885, 23352), (973, 21240), (1062, 19460), (1112, 18585), (1180, 17514), (1239, 16680), (1251, 16520), (1260, 16402), (1390, 14868), (1416, 14595), (1652, 12510), (1668, 12390), (1770, 11676), (1946, 10620), (2065, 10008), (2085, 9912), (2124, 9730), (2360, 8757), (2478, 8340), (2502, 8260), (2520, 8201), (2655, 7784), (2780, 7434), (2919, 7080), (3304, 6255), (3336, 6195), (3540, 5838), (3717, 5560), (3892, 5310), (4130, 5004), (4170, 4956), (4248, 4865)]