256220776

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{937}}^1$

素因数の和:1226

約数の個数: 64

約数和(自身を含む): 580809600

約数和(自身を除く): 324588824

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 257, 266, 514, 532, 937, 1028, 1064, 1799, 1874, 2056, 3598, 3748, 4883, 6559, 7196, 7496, 9766, 13118, 14392, 17803, 19532, 26236, 34181, 35606, 39064, 52472, 68362, 71212, 124621, 136724, 142424, 240809, 249242, 273448, 481618, 498484, 963236, 996968, 1685663, 1926472, 3371326, 4575371, 6742652, 9150742, 13485304, 18301484, 32027597, 36602968, 64055194, 128110388, 256220776]

約数ペア:

[(1, 256220776), (2, 128110388), (4, 64055194), (7, 36602968), (8, 32027597), (14, 18301484), (19, 13485304), (28, 9150742), (38, 6742652), (56, 4575371), (76, 3371326), (133, 1926472), (152, 1685663), (257, 996968), (266, 963236), (514, 498484), (532, 481618), (937, 273448), (1028, 249242), (1064, 240809), (1799, 142424), (1874, 136724), (2056, 124621), (3598, 71212), (3748, 68362), (4883, 52472), (6559, 39064), (7196, 35606), (7496, 34181), (9766, 26236), (13118, 19532), (14392, 17803)]