20750080

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:106

約数の個数: 144

約数和(自身を含む): 56659680

約数和(自身を除く): 35909600

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 29, 32, 40, 43, 52, 58, 64, 65, 80, 86, 104, 116, 128, 130, 145, 160, 172, 208, 215, 232, 256, 260, 290, 320, 344, 377, 416, 430, 464, 520, 559, 580, 640, 688, 754, 832, 860, 928, 1040, 1118, 1160, 1247, 1280, 1376, 1508, 1664, 1720, 1856, 1885, 2080, 2236, 2320, 2494, 2752, 2795, 3016, 3328, 3440, 3712, 3770, 4160, 4472, 4640, 4988, 5504, 5590, 6032, 6235, 6880, 7424, 7540, 8320, 8944, 9280, 9976, 11008, 11180, 12064, 12470, 13760, 15080, 16211, 16640, 17888, 18560, 19952, 22360, 24128, 24940, 27520, 30160, 32422, 35776, 37120, 39904, 44720, 48256, 49880, 55040, 60320, 64844, 71552, 79808, 81055, 89440, 96512, 99760, 120640, 129688, 143104, 159616, 162110, 178880, 199520, 241280, 259376, 319232, 324220, 357760, 399040, 482560, 518752, 648440, 715520, 798080, 1037504, 1296880, 1596160, 2075008, 2593760, 4150016, 5187520, 10375040, 20750080]

約数ペア:

[(1, 20750080), (2, 10375040), (4, 5187520), (5, 4150016), (8, 2593760), (10, 2075008), (13, 1596160), (16, 1296880), (20, 1037504), (26, 798080), (29, 715520), (32, 648440), (40, 518752), (43, 482560), (52, 399040), (58, 357760), (64, 324220), (65, 319232), (80, 259376), (86, 241280), (104, 199520), (116, 178880), (128, 162110), (130, 159616), (145, 143104), (160, 129688), (172, 120640), (208, 99760), (215, 96512), (232, 89440), (256, 81055), (260, 79808), (290, 71552), (320, 64844), (344, 60320), (377, 55040), (416, 49880), (430, 48256), (464, 44720), (520, 39904), (559, 37120), (580, 35776), (640, 32422), (688, 30160), (754, 27520), (832, 24940), (860, 24128), (928, 22360), (1040, 19952), (1118, 18560), (1160, 17888), (1247, 16640), (1280, 16211), (1376, 15080), (1508, 13760), (1664, 12470), (1720, 12064), (1856, 11180), (1885, 11008), (2080, 9976), (2236, 9280), (2320, 8944), (2494, 8320), (2752, 7540), (2795, 7424), (3016, 6880), (3328, 6235), (3440, 6032), (3712, 5590), (3770, 5504), (4160, 4988), (4472, 4640)]