218023960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{997}}^1$

素因数の和:1097

約数の個数: 128

約数和(自身を含む): 620835840

約数和(自身を除く): 402811880

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 71, 77, 88, 110, 140, 142, 154, 220, 280, 284, 308, 355, 385, 440, 497, 568, 616, 710, 770, 781, 994, 997, 1420, 1540, 1562, 1988, 1994, 2485, 2840, 3080, 3124, 3905, 3976, 3988, 4970, 4985, 5467, 6248, 6979, 7810, 7976, 9940, 9970, 10934, 10967, 13958, 15620, 19880, 19940, 21868, 21934, 27335, 27916, 31240, 34895, 39880, 43736, 43868, 54670, 54835, 55832, 69790, 70787, 76769, 87736, 109340, 109670, 139580, 141574, 153538, 218680, 219340, 279160, 283148, 307076, 353935, 383845, 438680, 495509, 566296, 614152, 707870, 767690, 778657, 991018, 1415740, 1535380, 1557314, 1982036, 2477545, 2831480, 3070760, 3114628, 3893285, 3964072, 4955090, 5450599, 6229256, 7786570, 9910180, 10901198, 15573140, 19820360, 21802396, 27252995, 31146280, 43604792, 54505990, 109011980, 218023960]

約数ペア:

[(1, 218023960), (2, 109011980), (4, 54505990), (5, 43604792), (7, 31146280), (8, 27252995), (10, 21802396), (11, 19820360), (14, 15573140), (20, 10901198), (22, 9910180), (28, 7786570), (35, 6229256), (40, 5450599), (44, 4955090), (55, 3964072), (56, 3893285), (70, 3114628), (71, 3070760), (77, 2831480), (88, 2477545), (110, 1982036), (140, 1557314), (142, 1535380), (154, 1415740), (220, 991018), (280, 778657), (284, 767690), (308, 707870), (355, 614152), (385, 566296), (440, 495509), (497, 438680), (568, 383845), (616, 353935), (710, 307076), (770, 283148), (781, 279160), (994, 219340), (997, 218680), (1420, 153538), (1540, 141574), (1562, 139580), (1988, 109670), (1994, 109340), (2485, 87736), (2840, 76769), (3080, 70787), (3124, 69790), (3905, 55832), (3976, 54835), (3988, 54670), (4970, 43868), (4985, 43736), (5467, 39880), (6248, 34895), (6979, 31240), (7810, 27916), (7976, 27335), (9940, 21934), (9970, 21868), (10934, 19940), (10967, 19880), (13958, 15620)]