21061040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1$

素因数の和:307

約数の個数: 160

約数和(自身を含む): 65995776

約数和(自身を除く): 44934736

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 80, 88, 91, 104, 110, 112, 130, 140, 143, 154, 176, 182, 208, 220, 260, 263, 280, 286, 308, 364, 385, 440, 455, 520, 526, 560, 572, 616, 715, 728, 770, 880, 910, 1001, 1040, 1052, 1144, 1232, 1315, 1430, 1456, 1540, 1820, 1841, 2002, 2104, 2288, 2630, 2860, 2893, 3080, 3419, 3640, 3682, 4004, 4208, 5005, 5260, 5720, 5786, 6160, 6838, 7280, 7364, 8008, 9205, 10010, 10520, 11440, 11572, 13676, 14465, 14728, 16016, 17095, 18410, 20020, 20251, 21040, 23144, 23933, 27352, 28930, 29456, 34190, 36820, 37609, 40040, 40502, 46288, 47866, 54704, 57860, 68380, 73640, 75218, 80080, 81004, 95732, 101255, 115720, 119665, 136760, 147280, 150436, 162008, 188045, 191464, 202510, 231440, 239330, 263263, 273520, 300872, 324016, 376090, 382928, 405020, 478660, 526526, 601744, 752180, 810040, 957320, 1053052, 1316315, 1504360, 1620080, 1914640, 2106104, 2632630, 3008720, 4212208, 5265260, 10530520, 21061040]

約数ペア:

[(1, 21061040), (2, 10530520), (4, 5265260), (5, 4212208), (7, 3008720), (8, 2632630), (10, 2106104), (11, 1914640), (13, 1620080), (14, 1504360), (16, 1316315), (20, 1053052), (22, 957320), (26, 810040), (28, 752180), (35, 601744), (40, 526526), (44, 478660), (52, 405020), (55, 382928), (56, 376090), (65, 324016), (70, 300872), (77, 273520), (80, 263263), (88, 239330), (91, 231440), (104, 202510), (110, 191464), (112, 188045), (130, 162008), (140, 150436), (143, 147280), (154, 136760), (176, 119665), (182, 115720), (208, 101255), (220, 95732), (260, 81004), (263, 80080), (280, 75218), (286, 73640), (308, 68380), (364, 57860), (385, 54704), (440, 47866), (455, 46288), (520, 40502), (526, 40040), (560, 37609), (572, 36820), (616, 34190), (715, 29456), (728, 28930), (770, 27352), (880, 23933), (910, 23144), (1001, 21040), (1040, 20251), (1052, 20020), (1144, 18410), (1232, 17095), (1315, 16016), (1430, 14728), (1456, 14465), (1540, 13676), (1820, 11572), (1841, 11440), (2002, 10520), (2104, 10010), (2288, 9205), (2630, 8008), (2860, 7364), (2893, 7280), (3080, 6838), (3419, 6160), (3640, 5786), (3682, 5720), (4004, 5260), (4208, 5005)]