21461440

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1$

素因数の和:115

約数の個数: 224

約数和(自身を含む): 69640704

約数和(自身を除く): 48179264

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, 67, 70, 77, 80, 88, 91, 104, 110, 112, 130, 134, 140, 143, 154, 160, 176, 182, 208, 220, 224, 260, 268, 280, 286, 308, 320, 335, 352, 364, 385, 416, 440, 448, 455, 469, 520, 536, 560, 572, 616, 670, 704, 715, 728, 737, 770, 832, 871, 880, 910, 938, 1001, 1040, 1072, 1120, 1144, 1232, 1340, 1430, 1456, 1474, 1540, 1742, 1760, 1820, 1876, 2002, 2080, 2144, 2240, 2288, 2345, 2464, 2680, 2860, 2912, 2948, 3080, 3484, 3520, 3640, 3685, 3752, 4004, 4160, 4288, 4355, 4576, 4690, 4928, 5005, 5159, 5360, 5720, 5824, 5896, 6097, 6160, 6968, 7280, 7370, 7504, 8008, 8710, 9152, 9380, 9581, 10010, 10318, 10720, 11440, 11792, 12194, 12320, 13936, 14560, 14740, 15008, 16016, 17420, 18760, 19162, 20020, 20636, 21440, 22880, 23584, 24388, 24640, 25795, 27872, 29120, 29480, 30016, 30485, 32032, 34840, 37520, 38324, 40040, 41272, 45760, 47168, 47905, 48776, 51590, 55744, 58960, 60970, 64064, 67067, 69680, 75040, 76648, 80080, 82544, 95810, 97552, 103180, 117920, 121940, 134134, 139360, 150080, 153296, 160160, 165088, 191620, 195104, 206360, 235840, 243880, 268268, 278720, 306592, 320320, 330176, 335335, 383240, 390208, 412720, 487760, 536536, 613184, 670670, 766480, 825440, 975520, 1073072, 1341340, 1532960, 1650880, 1951040, 2146144, 2682680, 3065920, 4292288, 5365360, 10730720, 21461440]

約数ペア:

[(1, 21461440), (2, 10730720), (4, 5365360), (5, 4292288), (7, 3065920), (8, 2682680), (10, 2146144), (11, 1951040), (13, 1650880), (14, 1532960), (16, 1341340), (20, 1073072), (22, 975520), (26, 825440), (28, 766480), (32, 670670), (35, 613184), (40, 536536), (44, 487760), (52, 412720), (55, 390208), (56, 383240), (64, 335335), (65, 330176), (67, 320320), (70, 306592), (77, 278720), (80, 268268), (88, 243880), (91, 235840), (104, 206360), (110, 195104), (112, 191620), (130, 165088), (134, 160160), (140, 153296), (143, 150080), (154, 139360), (160, 134134), (176, 121940), (182, 117920), (208, 103180), (220, 97552), (224, 95810), (260, 82544), (268, 80080), (280, 76648), (286, 75040), (308, 69680), (320, 67067), (335, 64064), (352, 60970), (364, 58960), (385, 55744), (416, 51590), (440, 48776), (448, 47905), (455, 47168), (469, 45760), (520, 41272), (536, 40040), (560, 38324), (572, 37520), (616, 34840), (670, 32032), (704, 30485), (715, 30016), (728, 29480), (737, 29120), (770, 27872), (832, 25795), (871, 24640), (880, 24388), (910, 23584), (938, 22880), (1001, 21440), (1040, 20636), (1072, 20020), (1120, 19162), (1144, 18760), (1232, 17420), (1340, 16016), (1430, 15008), (1456, 14740), (1474, 14560), (1540, 13936), (1742, 12320), (1760, 12194), (1820, 11792), (1876, 11440), (2002, 10720), (2080, 10318), (2144, 10010), (2240, 9581), (2288, 9380), (2345, 9152), (2464, 8710), (2680, 8008), (2860, 7504), (2912, 7370), (2948, 7280), (3080, 6968), (3484, 6160), (3520, 6097), (3640, 5896), (3685, 5824), (3752, 5720), (4004, 5360), (4160, 5159), (4288, 5005), (4355, 4928), (4576, 4690)]