131020288

素因数分解:

$2^9\times 7^1\times {\mathrm{139}}^1\times {\mathrm{263}}^1$

素因数の和:427

約数の個数: 80

約数和(自身を含む): 302480640

約数和(自身を除く): 171460352

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 139, 224, 256, 263, 278, 448, 512, 526, 556, 896, 973, 1052, 1112, 1792, 1841, 1946, 2104, 2224, 3584, 3682, 3892, 4208, 4448, 7364, 7784, 8416, 8896, 14728, 15568, 16832, 17792, 29456, 31136, 33664, 35584, 36557, 58912, 62272, 67328, 71168, 73114, 117824, 124544, 134656, 146228, 235648, 249088, 255899, 292456, 471296, 498176, 511798, 584912, 942592, 1023596, 1169824, 2047192, 2339648, 4094384, 4679296, 8188768, 9358592, 16377536, 18717184, 32755072, 65510144, 131020288]

約数ペア:

[(1, 131020288), (2, 65510144), (4, 32755072), (7, 18717184), (8, 16377536), (14, 9358592), (16, 8188768), (28, 4679296), (32, 4094384), (56, 2339648), (64, 2047192), (112, 1169824), (128, 1023596), (139, 942592), (224, 584912), (256, 511798), (263, 498176), (278, 471296), (448, 292456), (512, 255899), (526, 249088), (556, 235648), (896, 146228), (973, 134656), (1052, 124544), (1112, 117824), (1792, 73114), (1841, 71168), (1946, 67328), (2104, 62272), (2224, 58912), (3584, 36557), (3682, 35584), (3892, 33664), (4208, 31136), (4448, 29456), (7364, 17792), (7784, 16832), (8416, 15568), (8896, 14728)]