81486520

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{353}}^1$

素因数の和:592

約数の個数: 64

約数和(自身を含む): 191160000

約数和(自身を除く): 109673480

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 199, 232, 290, 353, 398, 580, 706, 796, 995, 1160, 1412, 1592, 1765, 1990, 2824, 3530, 3980, 5771, 7060, 7960, 10237, 11542, 14120, 20474, 23084, 28855, 40948, 46168, 51185, 57710, 70247, 81896, 102370, 115420, 140494, 204740, 230840, 280988, 351235, 409480, 561976, 702470, 1404940, 2037163, 2809880, 4074326, 8148652, 10185815, 16297304, 20371630, 40743260, 81486520]

約数ペア:

[(1, 81486520), (2, 40743260), (4, 20371630), (5, 16297304), (8, 10185815), (10, 8148652), (20, 4074326), (29, 2809880), (40, 2037163), (58, 1404940), (116, 702470), (145, 561976), (199, 409480), (232, 351235), (290, 280988), (353, 230840), (398, 204740), (580, 140494), (706, 115420), (796, 102370), (995, 81896), (1160, 70247), (1412, 57710), (1592, 51185), (1765, 46168), (1990, 40948), (2824, 28855), (3530, 23084), (3980, 20474), (5771, 14120), (7060, 11542), (7960, 10237)]