20149168

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1327}}^1$

素因数の和:1421

約数の個数: 40

約数和(自身を含む): 42650048

約数和(自身を除く): 22500880

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 73, 104, 146, 208, 292, 584, 949, 1168, 1327, 1898, 2654, 3796, 5308, 7592, 10616, 15184, 17251, 21232, 34502, 69004, 96871, 138008, 193742, 276016, 387484, 774968, 1259323, 1549936, 2518646, 5037292, 10074584, 20149168]

約数ペア:

[(1, 20149168), (2, 10074584), (4, 5037292), (8, 2518646), (13, 1549936), (16, 1259323), (26, 774968), (52, 387484), (73, 276016), (104, 193742), (146, 138008), (208, 96871), (292, 69004), (584, 34502), (949, 21232), (1168, 17251), (1327, 15184), (1898, 10616), (2654, 7592), (3796, 5308)]