1640299920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{976369}}^1$

素因数の和:976392

約数の個数: 80

約数和(自身を含む): 5811354240

約数和(自身を除く): 4171054320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 976369, 1952738, 2929107, 3905476, 4881845, 5858214, 6834583, 7810952, 9763690, 11716428, 13669166, 14645535, 15621904, 19527380, 20503749, 23432856, 27338332, 29291070, 34172915, 39054760, 41007498, 46865712, 54676664, 58582140, 68345830, 78109520, 82014996, 102518745, 109353328, 117164280, 136691660, 164029992, 205037490, 234328560, 273383320, 328059984, 410074980, 546766640, 820149960, 1640299920]

約数ペア:

[(1, 1640299920), (2, 820149960), (3, 546766640), (4, 410074980), (5, 328059984), (6, 273383320), (7, 234328560), (8, 205037490), (10, 164029992), (12, 136691660), (14, 117164280), (15, 109353328), (16, 102518745), (20, 82014996), (21, 78109520), (24, 68345830), (28, 58582140), (30, 54676664), (35, 46865712), (40, 41007498), (42, 39054760), (48, 34172915), (56, 29291070), (60, 27338332), (70, 23432856), (80, 20503749), (84, 19527380), (105, 15621904), (112, 14645535), (120, 13669166), (140, 11716428), (168, 9763690), (210, 7810952), (240, 6834583), (280, 5858214), (336, 4881845), (420, 3905476), (560, 2929107), (840, 1952738), (1680, 976369)]