28657206

素因数分解:

$2^1\times 3^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:131

約数の個数: 128

約数和(自身を含む): 74649600

約数和(自身を除く): 45992394

約数列:

[1, 2, 3, 6, 9, 17, 18, 19, 27, 31, 34, 38, 51, 53, 54, 57, 62, 93, 102, 106, 114, 153, 159, 171, 186, 279, 306, 318, 323, 342, 459, 477, 513, 527, 558, 589, 646, 837, 901, 918, 954, 969, 1007, 1026, 1054, 1178, 1431, 1581, 1643, 1674, 1767, 1802, 1938, 2014, 2703, 2862, 2907, 3021, 3162, 3286, 3534, 4743, 4929, 5301, 5406, 5814, 6042, 8109, 8721, 9063, 9486, 9858, 10013, 10602, 14229, 14787, 15903, 16218, 17119, 17442, 18126, 20026, 24327, 27189, 27931, 28458, 29574, 30039, 31217, 31806, 34238, 44361, 48654, 51357, 54378, 55862, 60078, 62434, 83793, 88722, 90117, 93651, 102714, 154071, 167586, 180234, 187302, 251379, 270351, 280953, 308142, 462213, 502758, 530689, 540702, 561906, 754137, 842859, 924426, 1061378, 1508274, 1592067, 1685718, 3184134, 4776201, 9552402, 14328603, 28657206]

約数ペア:

[(1, 28657206), (2, 14328603), (3, 9552402), (6, 4776201), (9, 3184134), (17, 1685718), (18, 1592067), (19, 1508274), (27, 1061378), (31, 924426), (34, 842859), (38, 754137), (51, 561906), (53, 540702), (54, 530689), (57, 502758), (62, 462213), (93, 308142), (102, 280953), (106, 270351), (114, 251379), (153, 187302), (159, 180234), (171, 167586), (186, 154071), (279, 102714), (306, 93651), (318, 90117), (323, 88722), (342, 83793), (459, 62434), (477, 60078), (513, 55862), (527, 54378), (558, 51357), (589, 48654), (646, 44361), (837, 34238), (901, 31806), (918, 31217), (954, 30039), (969, 29574), (1007, 28458), (1026, 27931), (1054, 27189), (1178, 24327), (1431, 20026), (1581, 18126), (1643, 17442), (1674, 17119), (1767, 16218), (1802, 15903), (1938, 14787), (2014, 14229), (2703, 10602), (2862, 10013), (2907, 9858), (3021, 9486), (3162, 9063), (3286, 8721), (3534, 8109), (4743, 6042), (4929, 5814), (5301, 5406)]