2561280

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1$

素因数の和:76

約数の個数: 144

約数和(自身を含む): 8830080

約数和(自身を除く): 6268800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 29, 30, 32, 40, 46, 48, 58, 60, 64, 69, 80, 87, 92, 96, 115, 116, 120, 128, 138, 145, 160, 174, 184, 192, 230, 232, 240, 256, 276, 290, 320, 345, 348, 368, 384, 435, 460, 464, 480, 552, 580, 640, 667, 690, 696, 736, 768, 870, 920, 928, 960, 1104, 1160, 1280, 1334, 1380, 1392, 1472, 1740, 1840, 1856, 1920, 2001, 2208, 2320, 2668, 2760, 2784, 2944, 3335, 3480, 3680, 3712, 3840, 4002, 4416, 4640, 5336, 5520, 5568, 5888, 6670, 6960, 7360, 7424, 8004, 8832, 9280, 10005, 10672, 11040, 11136, 13340, 13920, 14720, 16008, 17664, 18560, 20010, 21344, 22080, 22272, 26680, 27840, 29440, 32016, 37120, 40020, 42688, 44160, 53360, 55680, 64032, 80040, 85376, 88320, 106720, 111360, 128064, 160080, 170752, 213440, 256128, 320160, 426880, 512256, 640320, 853760, 1280640, 2561280]

約数ペア:

[(1, 2561280), (2, 1280640), (3, 853760), (4, 640320), (5, 512256), (6, 426880), (8, 320160), (10, 256128), (12, 213440), (15, 170752), (16, 160080), (20, 128064), (23, 111360), (24, 106720), (29, 88320), (30, 85376), (32, 80040), (40, 64032), (46, 55680), (48, 53360), (58, 44160), (60, 42688), (64, 40020), (69, 37120), (80, 32016), (87, 29440), (92, 27840), (96, 26680), (115, 22272), (116, 22080), (120, 21344), (128, 20010), (138, 18560), (145, 17664), (160, 16008), (174, 14720), (184, 13920), (192, 13340), (230, 11136), (232, 11040), (240, 10672), (256, 10005), (276, 9280), (290, 8832), (320, 8004), (345, 7424), (348, 7360), (368, 6960), (384, 6670), (435, 5888), (460, 5568), (464, 5520), (480, 5336), (552, 4640), (580, 4416), (640, 4002), (667, 3840), (690, 3712), (696, 3680), (736, 3480), (768, 3335), (870, 2944), (920, 2784), (928, 2760), (960, 2668), (1104, 2320), (1160, 2208), (1280, 2001), (1334, 1920), (1380, 1856), (1392, 1840), (1472, 1740)]