81139520

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:161

約数の個数: 224

約数和(自身を含む): 250179840

約数和(自身を除く): 169040320

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 37, 40, 44, 55, 56, 64, 70, 74, 77, 80, 88, 89, 110, 112, 140, 148, 154, 160, 176, 178, 185, 220, 224, 259, 280, 296, 308, 320, 352, 356, 370, 385, 407, 440, 445, 448, 518, 560, 592, 616, 623, 704, 712, 740, 770, 814, 880, 890, 979, 1036, 1120, 1184, 1232, 1246, 1295, 1424, 1480, 1540, 1628, 1760, 1780, 1958, 2035, 2072, 2240, 2368, 2464, 2492, 2590, 2848, 2849, 2960, 3080, 3115, 3256, 3293, 3520, 3560, 3916, 4070, 4144, 4895, 4928, 4984, 5180, 5696, 5698, 5920, 6160, 6230, 6512, 6586, 6853, 7120, 7832, 8140, 8288, 9790, 9968, 10360, 11396, 11840, 12320, 12460, 13024, 13172, 13706, 14240, 14245, 15664, 16280, 16465, 16576, 19580, 19936, 20720, 22792, 23051, 24640, 24920, 26048, 26344, 27412, 28480, 28490, 31328, 32560, 32930, 34265, 36223, 39160, 39872, 41440, 45584, 46102, 49840, 52688, 54824, 56980, 62656, 65120, 65860, 68530, 72446, 78320, 82880, 91168, 92204, 99680, 105376, 109648, 113960, 115255, 130240, 131720, 137060, 144892, 156640, 181115, 182336, 184408, 199360, 210752, 219296, 227920, 230510, 253561, 263440, 274120, 289784, 313280, 362230, 368816, 438592, 455840, 461020, 507122, 526880, 548240, 579568, 724460, 737632, 911680, 922040, 1014244, 1053760, 1096480, 1159136, 1267805, 1448920, 1475264, 1844080, 2028488, 2192960, 2318272, 2535610, 2897840, 3688160, 4056976, 5071220, 5795680, 7376320, 8113952, 10142440, 11591360, 16227904, 20284880, 40569760, 81139520]

約数ペア:

[(1, 81139520), (2, 40569760), (4, 20284880), (5, 16227904), (7, 11591360), (8, 10142440), (10, 8113952), (11, 7376320), (14, 5795680), (16, 5071220), (20, 4056976), (22, 3688160), (28, 2897840), (32, 2535610), (35, 2318272), (37, 2192960), (40, 2028488), (44, 1844080), (55, 1475264), (56, 1448920), (64, 1267805), (70, 1159136), (74, 1096480), (77, 1053760), (80, 1014244), (88, 922040), (89, 911680), (110, 737632), (112, 724460), (140, 579568), (148, 548240), (154, 526880), (160, 507122), (176, 461020), (178, 455840), (185, 438592), (220, 368816), (224, 362230), (259, 313280), (280, 289784), (296, 274120), (308, 263440), (320, 253561), (352, 230510), (356, 227920), (370, 219296), (385, 210752), (407, 199360), (440, 184408), (445, 182336), (448, 181115), (518, 156640), (560, 144892), (592, 137060), (616, 131720), (623, 130240), (704, 115255), (712, 113960), (740, 109648), (770, 105376), (814, 99680), (880, 92204), (890, 91168), (979, 82880), (1036, 78320), (1120, 72446), (1184, 68530), (1232, 65860), (1246, 65120), (1295, 62656), (1424, 56980), (1480, 54824), (1540, 52688), (1628, 49840), (1760, 46102), (1780, 45584), (1958, 41440), (2035, 39872), (2072, 39160), (2240, 36223), (2368, 34265), (2464, 32930), (2492, 32560), (2590, 31328), (2848, 28490), (2849, 28480), (2960, 27412), (3080, 26344), (3115, 26048), (3256, 24920), (3293, 24640), (3520, 23051), (3560, 22792), (3916, 20720), (4070, 19936), (4144, 19580), (4895, 16576), (4928, 16465), (4984, 16280), (5180, 15664), (5696, 14245), (5698, 14240), (5920, 13706), (6160, 13172), (6230, 13024), (6512, 12460), (6586, 12320), (6853, 11840), (7120, 11396), (7832, 10360), (8140, 9968), (8288, 9790)]