131376128

素因数分解:

$2^{10}\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:243

約数の個数: 88

約数和(自身を含む): 288872640

約数和(自身を除く): 157496512

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 71, 104, 128, 139, 142, 208, 256, 278, 284, 416, 512, 556, 568, 832, 923, 1024, 1112, 1136, 1664, 1807, 1846, 2224, 2272, 3328, 3614, 3692, 4448, 4544, 6656, 7228, 7384, 8896, 9088, 9869, 13312, 14456, 14768, 17792, 18176, 19738, 28912, 29536, 35584, 36352, 39476, 57824, 59072, 71168, 72704, 78952, 115648, 118144, 128297, 142336, 157904, 231296, 236288, 256594, 315808, 462592, 472576, 513188, 631616, 925184, 945152, 1026376, 1263232, 1850368, 2052752, 2526464, 4105504, 5052928, 8211008, 10105856, 16422016, 32844032, 65688064, 131376128]

約数ペア:

[(1, 131376128), (2, 65688064), (4, 32844032), (8, 16422016), (13, 10105856), (16, 8211008), (26, 5052928), (32, 4105504), (52, 2526464), (64, 2052752), (71, 1850368), (104, 1263232), (128, 1026376), (139, 945152), (142, 925184), (208, 631616), (256, 513188), (278, 472576), (284, 462592), (416, 315808), (512, 256594), (556, 236288), (568, 231296), (832, 157904), (923, 142336), (1024, 128297), (1112, 118144), (1136, 115648), (1664, 78952), (1807, 72704), (1846, 71168), (2224, 59072), (2272, 57824), (3328, 39476), (3614, 36352), (3692, 35584), (4448, 29536), (4544, 28912), (6656, 19738), (7228, 18176), (7384, 17792), (8896, 14768), (9088, 14456), (9869, 13312)]