20500480

素因数分解:

$2^{12}\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1$

素因数の和:60

約数の個数: 208

約数和(自身を含む): 66052224

約数和(自身を除く): 45551744

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 32, 35, 40, 44, 52, 55, 56, 64, 65, 70, 77, 80, 88, 91, 104, 110, 112, 128, 130, 140, 143, 154, 160, 176, 182, 208, 220, 224, 256, 260, 280, 286, 308, 320, 352, 364, 385, 416, 440, 448, 455, 512, 520, 560, 572, 616, 640, 704, 715, 728, 770, 832, 880, 896, 910, 1001, 1024, 1040, 1120, 1144, 1232, 1280, 1408, 1430, 1456, 1540, 1664, 1760, 1792, 1820, 2002, 2048, 2080, 2240, 2288, 2464, 2560, 2816, 2860, 2912, 3080, 3328, 3520, 3584, 3640, 4004, 4096, 4160, 4480, 4576, 4928, 5005, 5120, 5632, 5720, 5824, 6160, 6656, 7040, 7168, 7280, 8008, 8320, 8960, 9152, 9856, 10010, 10240, 11264, 11440, 11648, 12320, 13312, 14080, 14336, 14560, 16016, 16640, 17920, 18304, 19712, 20020, 20480, 22528, 22880, 23296, 24640, 26624, 28160, 28672, 29120, 32032, 33280, 35840, 36608, 39424, 40040, 45056, 45760, 46592, 49280, 53248, 56320, 58240, 64064, 66560, 71680, 73216, 78848, 80080, 91520, 93184, 98560, 112640, 116480, 128128, 133120, 143360, 146432, 157696, 160160, 183040, 186368, 197120, 225280, 232960, 256256, 266240, 292864, 315392, 320320, 366080, 372736, 394240, 465920, 512512, 585728, 640640, 732160, 788480, 931840, 1025024, 1281280, 1464320, 1576960, 1863680, 2050048, 2562560, 2928640, 4100096, 5125120, 10250240, 20500480]

約数ペア:

[(1, 20500480), (2, 10250240), (4, 5125120), (5, 4100096), (7, 2928640), (8, 2562560), (10, 2050048), (11, 1863680), (13, 1576960), (14, 1464320), (16, 1281280), (20, 1025024), (22, 931840), (26, 788480), (28, 732160), (32, 640640), (35, 585728), (40, 512512), (44, 465920), (52, 394240), (55, 372736), (56, 366080), (64, 320320), (65, 315392), (70, 292864), (77, 266240), (80, 256256), (88, 232960), (91, 225280), (104, 197120), (110, 186368), (112, 183040), (128, 160160), (130, 157696), (140, 146432), (143, 143360), (154, 133120), (160, 128128), (176, 116480), (182, 112640), (208, 98560), (220, 93184), (224, 91520), (256, 80080), (260, 78848), (280, 73216), (286, 71680), (308, 66560), (320, 64064), (352, 58240), (364, 56320), (385, 53248), (416, 49280), (440, 46592), (448, 45760), (455, 45056), (512, 40040), (520, 39424), (560, 36608), (572, 35840), (616, 33280), (640, 32032), (704, 29120), (715, 28672), (728, 28160), (770, 26624), (832, 24640), (880, 23296), (896, 22880), (910, 22528), (1001, 20480), (1024, 20020), (1040, 19712), (1120, 18304), (1144, 17920), (1232, 16640), (1280, 16016), (1408, 14560), (1430, 14336), (1456, 14080), (1540, 13312), (1664, 12320), (1760, 11648), (1792, 11440), (1820, 11264), (2002, 10240), (2048, 10010), (2080, 9856), (2240, 9152), (2288, 8960), (2464, 8320), (2560, 8008), (2816, 7280), (2860, 7168), (2912, 7040), (3080, 6656), (3328, 6160), (3520, 5824), (3584, 5720), (3640, 5632), (4004, 5120), (4096, 5005), (4160, 4928), (4480, 4576)]