21264880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1$

素因数の和:183

約数の個数: 160

約数和(自身を含む): 63995904

約数和(自身を除く): 42731024

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 23, 26, 28, 35, 40, 46, 52, 56, 65, 70, 80, 91, 92, 104, 112, 115, 127, 130, 140, 161, 182, 184, 208, 230, 254, 260, 280, 299, 322, 364, 368, 455, 460, 508, 520, 560, 598, 635, 644, 728, 805, 889, 910, 920, 1016, 1040, 1196, 1270, 1288, 1456, 1495, 1610, 1651, 1778, 1820, 1840, 2032, 2093, 2392, 2540, 2576, 2921, 2990, 3220, 3302, 3556, 3640, 4186, 4445, 4784, 5080, 5842, 5980, 6440, 6604, 7112, 7280, 8255, 8372, 8890, 10160, 10465, 11557, 11684, 11960, 12880, 13208, 14224, 14605, 16510, 16744, 17780, 20447, 20930, 23114, 23368, 23920, 26416, 29210, 33020, 33488, 35560, 37973, 40894, 41860, 46228, 46736, 57785, 58420, 66040, 71120, 75946, 81788, 83720, 92456, 102235, 115570, 116840, 132080, 151892, 163576, 167440, 184912, 189865, 204470, 231140, 233680, 265811, 303784, 327152, 379730, 408940, 462280, 531622, 607568, 759460, 817880, 924560, 1063244, 1329055, 1518920, 1635760, 2126488, 2658110, 3037840, 4252976, 5316220, 10632440, 21264880]

約数ペア:

[(1, 21264880), (2, 10632440), (4, 5316220), (5, 4252976), (7, 3037840), (8, 2658110), (10, 2126488), (13, 1635760), (14, 1518920), (16, 1329055), (20, 1063244), (23, 924560), (26, 817880), (28, 759460), (35, 607568), (40, 531622), (46, 462280), (52, 408940), (56, 379730), (65, 327152), (70, 303784), (80, 265811), (91, 233680), (92, 231140), (104, 204470), (112, 189865), (115, 184912), (127, 167440), (130, 163576), (140, 151892), (161, 132080), (182, 116840), (184, 115570), (208, 102235), (230, 92456), (254, 83720), (260, 81788), (280, 75946), (299, 71120), (322, 66040), (364, 58420), (368, 57785), (455, 46736), (460, 46228), (508, 41860), (520, 40894), (560, 37973), (598, 35560), (635, 33488), (644, 33020), (728, 29210), (805, 26416), (889, 23920), (910, 23368), (920, 23114), (1016, 20930), (1040, 20447), (1196, 17780), (1270, 16744), (1288, 16510), (1456, 14605), (1495, 14224), (1610, 13208), (1651, 12880), (1778, 11960), (1820, 11684), (1840, 11557), (2032, 10465), (2093, 10160), (2392, 8890), (2540, 8372), (2576, 8255), (2921, 7280), (2990, 7112), (3220, 6604), (3302, 6440), (3556, 5980), (3640, 5842), (4186, 5080), (4445, 4784)]