289656440

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{36389}}^1$

素因数の和:36599

約数の個数: 32

約数和(自身を含む): 655020000

約数和(自身を除く): 365363560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 36389, 72778, 145556, 181945, 291112, 363890, 727780, 1455560, 7241411, 14482822, 28965644, 36207055, 57931288, 72414110, 144828220, 289656440]

約数ペア:

[(1, 289656440), (2, 144828220), (4, 72414110), (5, 57931288), (8, 36207055), (10, 28965644), (20, 14482822), (40, 7241411), (199, 1455560), (398, 727780), (796, 363890), (995, 291112), (1592, 181945), (1990, 145556), (3980, 72778), (7960, 36389)]