81519808

素因数分解:

$2^6\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{661}}^1$

素因数の和:761

約数の個数: 56

約数和(自身を含む): 169493184

約数和(自身を除く): 87973376

約数列:

[1, 2, 4, 8, 16, 32, 41, 47, 64, 82, 94, 164, 188, 328, 376, 656, 661, 752, 1312, 1322, 1504, 1927, 2624, 2644, 3008, 3854, 5288, 7708, 10576, 15416, 21152, 27101, 30832, 31067, 42304, 54202, 61664, 62134, 108404, 123328, 124268, 216808, 248536, 433616, 497072, 867232, 994144, 1273747, 1734464, 1988288, 2547494, 5094988, 10189976, 20379952, 40759904, 81519808]

約数ペア:

[(1, 81519808), (2, 40759904), (4, 20379952), (8, 10189976), (16, 5094988), (32, 2547494), (41, 1988288), (47, 1734464), (64, 1273747), (82, 994144), (94, 867232), (164, 497072), (188, 433616), (328, 248536), (376, 216808), (656, 124268), (661, 123328), (752, 108404), (1312, 62134), (1322, 61664), (1504, 54202), (1927, 42304), (2624, 31067), (2644, 30832), (3008, 27101), (3854, 21152), (5288, 15416), (7708, 10576)]