20490240

素因数分解:

$2^{11}\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1$

素因数の和:82

約数の個数: 192

約数和(自身を含む): 70761600

約数和(自身を除く): 50271360

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, 512, 552, 580, 640, 667, 690, 696, 736, 768, 870, 920, 928, 960, 1024, 1104, 1160, 1280, 1334, 1380, 1392, 1472, 1536, 1740, 1840, 1856, 1920, 2001, 2048, 2208, 2320, 2560, 2668, 2760, 2784, 2944, 3072, 3335, 3480, 3680, 3712, 3840, 4002, 4416, 4640, 5120, 5336, 5520, 5568, 5888, 6144, 6670, 6960, 7360, 7424, 7680, 8004, 8832, 9280, 10005, 10240, 10672, 11040, 11136, 11776, 13340, 13920, 14720, 14848, 15360, 16008, 17664, 18560, 20010, 21344, 22080, 22272, 23552, 26680, 27840, 29440, 29696, 30720, 32016, 35328, 37120, 40020, 42688, 44160, 44544, 47104, 53360, 55680, 58880, 59392, 64032, 70656, 74240, 80040, 85376, 88320, 89088, 106720, 111360, 117760, 128064, 141312, 148480, 160080, 170752, 176640, 178176, 213440, 222720, 235520, 256128, 296960, 320160, 341504, 353280, 426880, 445440, 512256, 640320, 683008, 706560, 853760, 890880, 1024512, 1280640, 1366016, 1707520, 2049024, 2561280, 3415040, 4098048, 5122560, 6830080, 10245120, 20490240]

約数ペア:

[(1, 20490240), (2, 10245120), (3, 6830080), (4, 5122560), (5, 4098048), (6, 3415040), (8, 2561280), (10, 2049024), (12, 1707520), (15, 1366016), (16, 1280640), (20, 1024512), (23, 890880), (24, 853760), (29, 706560), (30, 683008), (32, 640320), (40, 512256), (46, 445440), (48, 426880), (58, 353280), (60, 341504), (64, 320160), (69, 296960), (80, 256128), (87, 235520), (92, 222720), (96, 213440), (115, 178176), (116, 176640), (120, 170752), (128, 160080), (138, 148480), (145, 141312), (160, 128064), (174, 117760), (184, 111360), (192, 106720), (230, 89088), (232, 88320), (240, 85376), (256, 80040), (276, 74240), (290, 70656), (320, 64032), (345, 59392), (348, 58880), (368, 55680), (384, 53360), (435, 47104), (460, 44544), (464, 44160), (480, 42688), (512, 40020), (552, 37120), (580, 35328), (640, 32016), (667, 30720), (690, 29696), (696, 29440), (736, 27840), (768, 26680), (870, 23552), (920, 22272), (928, 22080), (960, 21344), (1024, 20010), (1104, 18560), (1160, 17664), (1280, 16008), (1334, 15360), (1380, 14848), (1392, 14720), (1472, 13920), (1536, 13340), (1740, 11776), (1840, 11136), (1856, 11040), (1920, 10672), (2001, 10240), (2048, 10005), (2208, 9280), (2320, 8832), (2560, 8004), (2668, 7680), (2760, 7424), (2784, 7360), (2944, 6960), (3072, 6670), (3335, 6144), (3480, 5888), (3680, 5568), (3712, 5520), (3840, 5336), (4002, 5120), (4416, 4640)]