21306672

素因数分解:

$2^4\times 3^3\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:128

約数の個数: 160

約数和(自身を含む): 66344960

約数和(自身を除く): 45038288

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 31, 36, 37, 43, 48, 54, 62, 72, 74, 86, 93, 108, 111, 124, 129, 144, 148, 172, 186, 216, 222, 248, 258, 279, 296, 333, 344, 372, 387, 432, 444, 496, 516, 558, 592, 666, 688, 744, 774, 837, 888, 999, 1032, 1116, 1147, 1161, 1332, 1333, 1488, 1548, 1591, 1674, 1776, 1998, 2064, 2232, 2294, 2322, 2664, 2666, 3096, 3182, 3348, 3441, 3996, 3999, 4464, 4588, 4644, 4773, 5328, 5332, 6192, 6364, 6696, 6882, 7992, 7998, 9176, 9288, 9546, 10323, 10664, 11997, 12728, 13392, 13764, 14319, 15984, 15996, 18352, 18576, 19092, 20646, 21328, 23994, 25456, 27528, 28638, 30969, 31992, 35991, 38184, 41292, 42957, 47988, 49321, 55056, 57276, 61938, 63984, 71982, 76368, 82584, 85914, 95976, 98642, 114552, 123876, 143964, 147963, 165168, 171828, 191952, 197284, 229104, 247752, 287928, 295926, 343656, 394568, 443889, 495504, 575856, 591852, 687312, 789136, 887778, 1183704, 1331667, 1775556, 2367408, 2663334, 3551112, 5326668, 7102224, 10653336, 21306672]

約数ペア:

[(1, 21306672), (2, 10653336), (3, 7102224), (4, 5326668), (6, 3551112), (8, 2663334), (9, 2367408), (12, 1775556), (16, 1331667), (18, 1183704), (24, 887778), (27, 789136), (31, 687312), (36, 591852), (37, 575856), (43, 495504), (48, 443889), (54, 394568), (62, 343656), (72, 295926), (74, 287928), (86, 247752), (93, 229104), (108, 197284), (111, 191952), (124, 171828), (129, 165168), (144, 147963), (148, 143964), (172, 123876), (186, 114552), (216, 98642), (222, 95976), (248, 85914), (258, 82584), (279, 76368), (296, 71982), (333, 63984), (344, 61938), (372, 57276), (387, 55056), (432, 49321), (444, 47988), (496, 42957), (516, 41292), (558, 38184), (592, 35991), (666, 31992), (688, 30969), (744, 28638), (774, 27528), (837, 25456), (888, 23994), (999, 21328), (1032, 20646), (1116, 19092), (1147, 18576), (1161, 18352), (1332, 15996), (1333, 15984), (1488, 14319), (1548, 13764), (1591, 13392), (1674, 12728), (1776, 11997), (1998, 10664), (2064, 10323), (2232, 9546), (2294, 9288), (2322, 9176), (2664, 7998), (2666, 7992), (3096, 6882), (3182, 6696), (3348, 6364), (3441, 6192), (3996, 5332), (3999, 5328), (4464, 4773), (4588, 4644)]