81502960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:263

約数の個数: 160

約数和(自身を含む): 240413184

約数和(自身を除く): 158910224

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 101, 110, 112, 131, 140, 154, 176, 202, 220, 262, 280, 308, 385, 404, 440, 505, 524, 560, 616, 655, 707, 770, 808, 880, 917, 1010, 1048, 1111, 1232, 1310, 1414, 1441, 1540, 1616, 1834, 2020, 2096, 2222, 2620, 2828, 2882, 3080, 3535, 3668, 4040, 4444, 4585, 5240, 5555, 5656, 5764, 6160, 7070, 7205, 7336, 7777, 8080, 8888, 9170, 10087, 10480, 11110, 11312, 11528, 13231, 14140, 14410, 14672, 15554, 17776, 18340, 20174, 22220, 23056, 26462, 28280, 28820, 31108, 36680, 38885, 40348, 44440, 50435, 52924, 56560, 57640, 62216, 66155, 73360, 77770, 80696, 88880, 92617, 100870, 105848, 115280, 124432, 132310, 145541, 155540, 161392, 185234, 201740, 211696, 264620, 291082, 311080, 370468, 403480, 463085, 529240, 582164, 622160, 727705, 740936, 806960, 926170, 1018787, 1058480, 1164328, 1455410, 1481872, 1852340, 2037574, 2328656, 2910820, 3704680, 4075148, 5093935, 5821640, 7409360, 8150296, 10187870, 11643280, 16300592, 20375740, 40751480, 81502960]

約数ペア:

[(1, 81502960), (2, 40751480), (4, 20375740), (5, 16300592), (7, 11643280), (8, 10187870), (10, 8150296), (11, 7409360), (14, 5821640), (16, 5093935), (20, 4075148), (22, 3704680), (28, 2910820), (35, 2328656), (40, 2037574), (44, 1852340), (55, 1481872), (56, 1455410), (70, 1164328), (77, 1058480), (80, 1018787), (88, 926170), (101, 806960), (110, 740936), (112, 727705), (131, 622160), (140, 582164), (154, 529240), (176, 463085), (202, 403480), (220, 370468), (262, 311080), (280, 291082), (308, 264620), (385, 211696), (404, 201740), (440, 185234), (505, 161392), (524, 155540), (560, 145541), (616, 132310), (655, 124432), (707, 115280), (770, 105848), (808, 100870), (880, 92617), (917, 88880), (1010, 80696), (1048, 77770), (1111, 73360), (1232, 66155), (1310, 62216), (1414, 57640), (1441, 56560), (1540, 52924), (1616, 50435), (1834, 44440), (2020, 40348), (2096, 38885), (2222, 36680), (2620, 31108), (2828, 28820), (2882, 28280), (3080, 26462), (3535, 23056), (3668, 22220), (4040, 20174), (4444, 18340), (4585, 17776), (5240, 15554), (5555, 14672), (5656, 14410), (5764, 14140), (6160, 13231), (7070, 11528), (7205, 11312), (7336, 11110), (7777, 10480), (8080, 10087), (8888, 9170)]