20750128

素因数分解:

$2^4\times 7^3\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:247

約数の個数: 80

約数和(自身を含む): 49600000

約数和(自身を除く): 28849872

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 49, 56, 76, 98, 112, 133, 152, 196, 199, 266, 304, 343, 392, 398, 532, 686, 784, 796, 931, 1064, 1372, 1393, 1592, 1862, 2128, 2744, 2786, 3184, 3724, 3781, 5488, 5572, 6517, 7448, 7562, 9751, 11144, 13034, 14896, 15124, 19502, 22288, 26068, 26467, 30248, 39004, 52136, 52934, 60496, 68257, 78008, 104272, 105868, 136514, 156016, 185269, 211736, 273028, 370538, 423472, 546056, 741076, 1092112, 1296883, 1482152, 2593766, 2964304, 5187532, 10375064, 20750128]

約数ペア:

[(1, 20750128), (2, 10375064), (4, 5187532), (7, 2964304), (8, 2593766), (14, 1482152), (16, 1296883), (19, 1092112), (28, 741076), (38, 546056), (49, 423472), (56, 370538), (76, 273028), (98, 211736), (112, 185269), (133, 156016), (152, 136514), (196, 105868), (199, 104272), (266, 78008), (304, 68257), (343, 60496), (392, 52934), (398, 52136), (532, 39004), (686, 30248), (784, 26467), (796, 26068), (931, 22288), (1064, 19502), (1372, 15124), (1393, 14896), (1592, 13034), (1862, 11144), (2128, 9751), (2744, 7562), (2786, 7448), (3184, 6517), (3724, 5572), (3781, 5488)]