19888011

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1$

素因数の和:154

約数の個数: 80

約数和(自身を含む): 37322208

約数和(自身を除く): 17434197

約数列:

[1, 3, 9, 11, 13, 17, 27, 33, 39, 51, 81, 99, 101, 117, 143, 153, 187, 221, 297, 303, 351, 429, 459, 561, 663, 891, 909, 1053, 1111, 1287, 1313, 1377, 1683, 1717, 1989, 2431, 2727, 3333, 3861, 3939, 5049, 5151, 5967, 7293, 8181, 9999, 11583, 11817, 14443, 15147, 15453, 17901, 18887, 21879, 22321, 29997, 35451, 43329, 46359, 56661, 65637, 66963, 89991, 106353, 129987, 139077, 169983, 196911, 200889, 245531, 389961, 509949, 602667, 736593, 1169883, 1529847, 1808001, 2209779, 6629337, 19888011]

約数ペア:

[(1, 19888011), (3, 6629337), (9, 2209779), (11, 1808001), (13, 1529847), (17, 1169883), (27, 736593), (33, 602667), (39, 509949), (51, 389961), (81, 245531), (99, 200889), (101, 196911), (117, 169983), (143, 139077), (153, 129987), (187, 106353), (221, 89991), (297, 66963), (303, 65637), (351, 56661), (429, 46359), (459, 43329), (561, 35451), (663, 29997), (891, 22321), (909, 21879), (1053, 18887), (1111, 17901), (1287, 15453), (1313, 15147), (1377, 14443), (1683, 11817), (1717, 11583), (1989, 9999), (2431, 8181), (2727, 7293), (3333, 5967), (3861, 5151), (3939, 5049)]