2019439120

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1\times {\mathrm{1321}}^1$

素因数の和:1628

約数の個数: 80

約数和(自身を含む): 4771288368

約数和(自身を除く): 2751849248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 197, 388, 394, 485, 776, 788, 970, 985, 1321, 1552, 1576, 1940, 1970, 2642, 3152, 3880, 3940, 5284, 6605, 7760, 7880, 10568, 13210, 15760, 19109, 21136, 26420, 38218, 52840, 76436, 95545, 105680, 128137, 152872, 191090, 256274, 260237, 305744, 382180, 512548, 520474, 640685, 764360, 1025096, 1040948, 1281370, 1301185, 1528720, 2050192, 2081896, 2562740, 2602370, 4163792, 5125480, 5204740, 10250960, 10409480, 20818960, 25242989, 50485978, 100971956, 126214945, 201943912, 252429890, 403887824, 504859780, 1009719560, 2019439120]

約数ペア:

[(1, 2019439120), (2, 1009719560), (4, 504859780), (5, 403887824), (8, 252429890), (10, 201943912), (16, 126214945), (20, 100971956), (40, 50485978), (80, 25242989), (97, 20818960), (194, 10409480), (197, 10250960), (388, 5204740), (394, 5125480), (485, 4163792), (776, 2602370), (788, 2562740), (970, 2081896), (985, 2050192), (1321, 1528720), (1552, 1301185), (1576, 1281370), (1940, 1040948), (1970, 1025096), (2642, 764360), (3152, 640685), (3880, 520474), (3940, 512548), (5284, 382180), (6605, 305744), (7760, 260237), (7880, 256274), (10568, 191090), (13210, 152872), (15760, 128137), (19109, 105680), (21136, 95545), (26420, 76436), (38218, 52840)]