18120861

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:171

約数の個数: 64

約数和(自身を含む): 32175360

約数和(自身を除く): 14054499

約数列:

[1, 3, 9, 11, 17, 27, 33, 37, 51, 97, 99, 111, 153, 187, 291, 297, 333, 407, 459, 561, 629, 873, 999, 1067, 1221, 1649, 1683, 1887, 2619, 3201, 3589, 3663, 4947, 5049, 5661, 6919, 9603, 10767, 10989, 14841, 16983, 18139, 20757, 28809, 32301, 39479, 44523, 54417, 61013, 62271, 96903, 118437, 163251, 183039, 186813, 355311, 489753, 549117, 671143, 1065933, 1647351, 2013429, 6040287, 18120861]

約数ペア:

[(1, 18120861), (3, 6040287), (9, 2013429), (11, 1647351), (17, 1065933), (27, 671143), (33, 549117), (37, 489753), (51, 355311), (97, 186813), (99, 183039), (111, 163251), (153, 118437), (187, 96903), (291, 62271), (297, 61013), (333, 54417), (407, 44523), (459, 39479), (561, 32301), (629, 28809), (873, 20757), (999, 18139), (1067, 16983), (1221, 14841), (1649, 10989), (1683, 10767), (1887, 9603), (2619, 6919), (3201, 5661), (3589, 5049), (3663, 4947)]