21185280

素因数分解:

$2^8\times 3^3\times 5^1\times {\mathrm{613}}^1$

素因数の和:643

約数の個数: 144

約数和(自身を含む): 75300960

約数和(自身を除く): 54115680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 256, 270, 288, 320, 360, 384, 432, 480, 540, 576, 613, 640, 720, 768, 864, 960, 1080, 1152, 1226, 1280, 1440, 1728, 1839, 1920, 2160, 2304, 2452, 2880, 3065, 3456, 3678, 3840, 4320, 4904, 5517, 5760, 6130, 6912, 7356, 8640, 9195, 9808, 11034, 11520, 12260, 14712, 16551, 17280, 18390, 19616, 22068, 24520, 27585, 29424, 33102, 34560, 36780, 39232, 44136, 49040, 55170, 58848, 66204, 73560, 78464, 82755, 88272, 98080, 110340, 117696, 132408, 147120, 156928, 165510, 176544, 196160, 220680, 235392, 264816, 294240, 331020, 353088, 392320, 441360, 470784, 529632, 588480, 662040, 706176, 784640, 882720, 1059264, 1176960, 1324080, 1412352, 1765440, 2118528, 2353920, 2648160, 3530880, 4237056, 5296320, 7061760, 10592640, 21185280]

約数ペア:

[(1, 21185280), (2, 10592640), (3, 7061760), (4, 5296320), (5, 4237056), (6, 3530880), (8, 2648160), (9, 2353920), (10, 2118528), (12, 1765440), (15, 1412352), (16, 1324080), (18, 1176960), (20, 1059264), (24, 882720), (27, 784640), (30, 706176), (32, 662040), (36, 588480), (40, 529632), (45, 470784), (48, 441360), (54, 392320), (60, 353088), (64, 331020), (72, 294240), (80, 264816), (90, 235392), (96, 220680), (108, 196160), (120, 176544), (128, 165510), (135, 156928), (144, 147120), (160, 132408), (180, 117696), (192, 110340), (216, 98080), (240, 88272), (256, 82755), (270, 78464), (288, 73560), (320, 66204), (360, 58848), (384, 55170), (432, 49040), (480, 44136), (540, 39232), (576, 36780), (613, 34560), (640, 33102), (720, 29424), (768, 27585), (864, 24520), (960, 22068), (1080, 19616), (1152, 18390), (1226, 17280), (1280, 16551), (1440, 14712), (1728, 12260), (1839, 11520), (1920, 11034), (2160, 9808), (2304, 9195), (2452, 8640), (2880, 7356), (3065, 6912), (3456, 6130), (3678, 5760), (3840, 5517), (4320, 4904)]