16628440

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2089}}^1$

素因数の和:2299

約数の個数: 32

約数和(自身を含む): 37620000

約数和(自身を除く): 20991560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 2089, 3980, 4178, 7960, 8356, 10445, 16712, 20890, 41780, 83560, 415711, 831422, 1662844, 2078555, 3325688, 4157110, 8314220, 16628440]

約数ペア:

[(1, 16628440), (2, 8314220), (4, 4157110), (5, 3325688), (8, 2078555), (10, 1662844), (20, 831422), (40, 415711), (199, 83560), (398, 41780), (796, 20890), (995, 16712), (1592, 10445), (1990, 8356), (2089, 7960), (3980, 4178)]