18868113

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:175

約数の個数: 64

約数和(自身を含む): 33488640

約数和(自身を除く): 14620527

約数列:

[1, 3, 9, 11, 17, 27, 33, 37, 51, 99, 101, 111, 153, 187, 297, 303, 333, 407, 459, 561, 629, 909, 999, 1111, 1221, 1683, 1717, 1887, 2727, 3333, 3663, 3737, 5049, 5151, 5661, 6919, 9999, 10989, 11211, 15453, 16983, 18887, 20757, 29997, 33633, 41107, 46359, 56661, 62271, 63529, 100899, 123321, 169983, 186813, 190587, 369963, 509949, 571761, 698819, 1109889, 1715283, 2096457, 6289371, 18868113]

約数ペア:

[(1, 18868113), (3, 6289371), (9, 2096457), (11, 1715283), (17, 1109889), (27, 698819), (33, 571761), (37, 509949), (51, 369963), (99, 190587), (101, 186813), (111, 169983), (153, 123321), (187, 100899), (297, 63529), (303, 62271), (333, 56661), (407, 46359), (459, 41107), (561, 33633), (629, 29997), (909, 20757), (999, 18887), (1111, 16983), (1221, 15453), (1683, 11211), (1717, 10989), (1887, 9999), (2727, 6919), (3333, 5661), (3663, 5151), (3737, 5049)]