18986198

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 37933056

約数和(自身を除く): 18946858

約数列:

[1, 2, 7, 11, 14, 22, 31, 41, 62, 77, 82, 97, 154, 194, 217, 287, 341, 434, 451, 574, 679, 682, 902, 1067, 1271, 1358, 2134, 2387, 2542, 3007, 3157, 3977, 4774, 6014, 6314, 7469, 7954, 8897, 13981, 14938, 17794, 21049, 27839, 27962, 33077, 42098, 43747, 55678, 66154, 87494, 97867, 123287, 195734, 231539, 246574, 306229, 463078, 612458, 863009, 1356157, 1726018, 2712314, 9493099, 18986198]

約数ペア:

[(1, 18986198), (2, 9493099), (7, 2712314), (11, 1726018), (14, 1356157), (22, 863009), (31, 612458), (41, 463078), (62, 306229), (77, 246574), (82, 231539), (97, 195734), (154, 123287), (194, 97867), (217, 87494), (287, 66154), (341, 55678), (434, 43747), (451, 42098), (574, 33077), (679, 27962), (682, 27839), (902, 21049), (1067, 17794), (1271, 14938), (1358, 13981), (2134, 8897), (2387, 7954), (2542, 7469), (3007, 6314), (3157, 6014), (3977, 4774)]