81067756

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1979}}^1$

素因数の和:2027

約数の個数: 72

約数和(自身を含む): 189604800

約数和(自身を除く): 108537044

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 38, 44, 49, 76, 77, 98, 133, 154, 196, 209, 266, 308, 418, 532, 539, 836, 931, 1078, 1463, 1862, 1979, 2156, 2926, 3724, 3958, 5852, 7916, 10241, 13853, 20482, 21769, 27706, 37601, 40964, 43538, 55412, 75202, 87076, 96971, 150404, 152383, 193942, 263207, 304766, 387884, 413611, 526414, 609532, 827222, 1052828, 1066681, 1654444, 1842449, 2133362, 2895277, 3684898, 4266724, 5790554, 7369796, 11581108, 20266939, 40533878, 81067756]

約数ペア:

[(1, 81067756), (2, 40533878), (4, 20266939), (7, 11581108), (11, 7369796), (14, 5790554), (19, 4266724), (22, 3684898), (28, 2895277), (38, 2133362), (44, 1842449), (49, 1654444), (76, 1066681), (77, 1052828), (98, 827222), (133, 609532), (154, 526414), (196, 413611), (209, 387884), (266, 304766), (308, 263207), (418, 193942), (532, 152383), (539, 150404), (836, 96971), (931, 87076), (1078, 75202), (1463, 55412), (1862, 43538), (1979, 40964), (2156, 37601), (2926, 27706), (3724, 21769), (3958, 20482), (5852, 13853), (7916, 10241)]