18911574

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{457}}^1$

素因数の和:506

約数の個数: 72

約数和(自身を含む): 47512920

約数和(自身を除く): 28601346

約数列:

[1, 2, 3, 6, 9, 11, 18, 19, 22, 33, 38, 57, 66, 99, 114, 121, 171, 198, 209, 242, 342, 363, 418, 457, 627, 726, 914, 1089, 1254, 1371, 1881, 2178, 2299, 2742, 3762, 4113, 4598, 5027, 6897, 8226, 8683, 10054, 13794, 15081, 17366, 20691, 26049, 30162, 41382, 45243, 52098, 55297, 78147, 90486, 95513, 110594, 156294, 165891, 191026, 286539, 331782, 497673, 573078, 859617, 995346, 1050643, 1719234, 2101286, 3151929, 6303858, 9455787, 18911574]

約数ペア:

[(1, 18911574), (2, 9455787), (3, 6303858), (6, 3151929), (9, 2101286), (11, 1719234), (18, 1050643), (19, 995346), (22, 859617), (33, 573078), (38, 497673), (57, 331782), (66, 286539), (99, 191026), (114, 165891), (121, 156294), (171, 110594), (198, 95513), (209, 90486), (242, 78147), (342, 55297), (363, 52098), (418, 45243), (457, 41382), (627, 30162), (726, 26049), (914, 20691), (1089, 17366), (1254, 15081), (1371, 13794), (1881, 10054), (2178, 8683), (2299, 8226), (2742, 6897), (3762, 5027), (4113, 4598)]