7285707

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1$

素因数の和:90

約数の個数: 80

約数和(自身を含む): 13904352

約数和(自身を除く): 6618645

約数列:

[1, 3, 9, 11, 13, 17, 27, 33, 37, 39, 51, 81, 99, 111, 117, 143, 153, 187, 221, 297, 333, 351, 407, 429, 459, 481, 561, 629, 663, 891, 999, 1053, 1221, 1287, 1377, 1443, 1683, 1887, 1989, 2431, 2997, 3663, 3861, 4329, 5049, 5291, 5661, 5967, 6919, 7293, 8177, 10989, 11583, 12987, 15147, 15873, 16983, 17901, 20757, 21879, 24531, 32967, 38961, 47619, 50949, 62271, 65637, 73593, 89947, 142857, 186813, 196911, 220779, 269841, 428571, 560439, 662337, 809523, 2428569, 7285707]

約数ペア:

[(1, 7285707), (3, 2428569), (9, 809523), (11, 662337), (13, 560439), (17, 428571), (27, 269841), (33, 220779), (37, 196911), (39, 186813), (51, 142857), (81, 89947), (99, 73593), (111, 65637), (117, 62271), (143, 50949), (153, 47619), (187, 38961), (221, 32967), (297, 24531), (333, 21879), (351, 20757), (407, 17901), (429, 16983), (459, 15873), (481, 15147), (561, 12987), (629, 11583), (663, 10989), (891, 8177), (999, 7293), (1053, 6919), (1221, 5967), (1287, 5661), (1377, 5291), (1443, 5049), (1683, 4329), (1887, 3861), (1989, 3663), (2431, 2997)]