217427560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{10937}}^1$

素因数の和:11026

約数の個数: 64

約数和(自身を含む): 567025920

約数和(自身を除く): 349598360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1988, 2485, 2840, 3976, 4970, 9940, 10937, 19880, 21874, 43748, 54685, 76559, 87496, 109370, 153118, 218740, 306236, 382795, 437480, 612472, 765590, 776527, 1531180, 1553054, 3062360, 3106108, 3882635, 5435689, 6212216, 7765270, 10871378, 15530540, 21742756, 27178445, 31061080, 43485512, 54356890, 108713780, 217427560]

約数ペア:

[(1, 217427560), (2, 108713780), (4, 54356890), (5, 43485512), (7, 31061080), (8, 27178445), (10, 21742756), (14, 15530540), (20, 10871378), (28, 7765270), (35, 6212216), (40, 5435689), (56, 3882635), (70, 3106108), (71, 3062360), (140, 1553054), (142, 1531180), (280, 776527), (284, 765590), (355, 612472), (497, 437480), (568, 382795), (710, 306236), (994, 218740), (1420, 153118), (1988, 109370), (2485, 87496), (2840, 76559), (3976, 54685), (4970, 43748), (9940, 21874), (10937, 19880)]