18971084

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 38201856

約数和(自身を除く): 19230772

約数列:

[1, 2, 4, 11, 22, 37, 43, 44, 74, 86, 148, 172, 271, 407, 473, 542, 814, 946, 1084, 1591, 1628, 1892, 2981, 3182, 5962, 6364, 10027, 11653, 11924, 17501, 20054, 23306, 35002, 40108, 46612, 70004, 110297, 128183, 220594, 256366, 431161, 441188, 512732, 862322, 1724644, 4742771, 9485542, 18971084]

約数ペア:

[(1, 18971084), (2, 9485542), (4, 4742771), (11, 1724644), (22, 862322), (37, 512732), (43, 441188), (44, 431161), (74, 256366), (86, 220594), (148, 128183), (172, 110297), (271, 70004), (407, 46612), (473, 40108), (542, 35002), (814, 23306), (946, 20054), (1084, 17501), (1591, 11924), (1628, 11653), (1892, 10027), (2981, 6364), (3182, 5962)]