20968640

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:95

約数の個数: 224

約数和(自身を含む): 66714624

約数和(自身を除く): 45745984

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 23, 28, 32, 35, 37, 40, 44, 46, 55, 56, 64, 70, 74, 77, 80, 88, 92, 110, 112, 115, 140, 148, 154, 160, 161, 176, 184, 185, 220, 224, 230, 253, 259, 280, 296, 308, 320, 322, 352, 368, 370, 385, 407, 440, 448, 460, 506, 518, 560, 592, 616, 644, 704, 736, 740, 770, 805, 814, 851, 880, 920, 1012, 1036, 1120, 1184, 1232, 1265, 1288, 1295, 1472, 1480, 1540, 1610, 1628, 1702, 1760, 1771, 1840, 2024, 2035, 2072, 2240, 2368, 2464, 2530, 2576, 2590, 2849, 2960, 3080, 3220, 3256, 3404, 3520, 3542, 3680, 4048, 4070, 4144, 4255, 4928, 5060, 5152, 5180, 5698, 5920, 5957, 6160, 6440, 6512, 6808, 7084, 7360, 8096, 8140, 8288, 8510, 8855, 9361, 10120, 10304, 10360, 11396, 11840, 11914, 12320, 12880, 13024, 13616, 14168, 14245, 16192, 16280, 16576, 17020, 17710, 18722, 20240, 20720, 22792, 23828, 24640, 25760, 26048, 27232, 28336, 28490, 29785, 32560, 34040, 35420, 37444, 40480, 41440, 45584, 46805, 47656, 51520, 54464, 56672, 56980, 59570, 65120, 65527, 68080, 70840, 74888, 80960, 82880, 91168, 93610, 95312, 113344, 113960, 119140, 130240, 131054, 136160, 141680, 149776, 182336, 187220, 190624, 227920, 238280, 262108, 272320, 283360, 299552, 327635, 374440, 381248, 455840, 476560, 524216, 566720, 599104, 655270, 748880, 911680, 953120, 1048432, 1310540, 1497760, 1906240, 2096864, 2621080, 2995520, 4193728, 5242160, 10484320, 20968640]

約数ペア:

[(1, 20968640), (2, 10484320), (4, 5242160), (5, 4193728), (7, 2995520), (8, 2621080), (10, 2096864), (11, 1906240), (14, 1497760), (16, 1310540), (20, 1048432), (22, 953120), (23, 911680), (28, 748880), (32, 655270), (35, 599104), (37, 566720), (40, 524216), (44, 476560), (46, 455840), (55, 381248), (56, 374440), (64, 327635), (70, 299552), (74, 283360), (77, 272320), (80, 262108), (88, 238280), (92, 227920), (110, 190624), (112, 187220), (115, 182336), (140, 149776), (148, 141680), (154, 136160), (160, 131054), (161, 130240), (176, 119140), (184, 113960), (185, 113344), (220, 95312), (224, 93610), (230, 91168), (253, 82880), (259, 80960), (280, 74888), (296, 70840), (308, 68080), (320, 65527), (322, 65120), (352, 59570), (368, 56980), (370, 56672), (385, 54464), (407, 51520), (440, 47656), (448, 46805), (460, 45584), (506, 41440), (518, 40480), (560, 37444), (592, 35420), (616, 34040), (644, 32560), (704, 29785), (736, 28490), (740, 28336), (770, 27232), (805, 26048), (814, 25760), (851, 24640), (880, 23828), (920, 22792), (1012, 20720), (1036, 20240), (1120, 18722), (1184, 17710), (1232, 17020), (1265, 16576), (1288, 16280), (1295, 16192), (1472, 14245), (1480, 14168), (1540, 13616), (1610, 13024), (1628, 12880), (1702, 12320), (1760, 11914), (1771, 11840), (1840, 11396), (2024, 10360), (2035, 10304), (2072, 10120), (2240, 9361), (2368, 8855), (2464, 8510), (2530, 8288), (2576, 8140), (2590, 8096), (2849, 7360), (2960, 7084), (3080, 6808), (3220, 6512), (3256, 6440), (3404, 6160), (3520, 5957), (3542, 5920), (3680, 5698), (4048, 5180), (4070, 5152), (4144, 5060), (4255, 4928)]