28129712

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:238

約数の個数: 60

約数和(自身を含む): 60179184

約数和(自身を除く): 32049472

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 101, 103, 104, 169, 202, 206, 208, 338, 404, 412, 676, 808, 824, 1313, 1339, 1352, 1616, 1648, 2626, 2678, 2704, 5252, 5356, 10403, 10504, 10712, 17069, 17407, 20806, 21008, 21424, 34138, 34814, 41612, 68276, 69628, 83224, 135239, 136552, 139256, 166448, 270478, 273104, 278512, 540956, 1081912, 1758107, 2163824, 3516214, 7032428, 14064856, 28129712]

約数ペア:

[(1, 28129712), (2, 14064856), (4, 7032428), (8, 3516214), (13, 2163824), (16, 1758107), (26, 1081912), (52, 540956), (101, 278512), (103, 273104), (104, 270478), (169, 166448), (202, 139256), (206, 136552), (208, 135239), (338, 83224), (404, 69628), (412, 68276), (676, 41612), (808, 34814), (824, 34138), (1313, 21424), (1339, 21008), (1352, 20806), (1616, 17407), (1648, 17069), (2626, 10712), (2678, 10504), (2704, 10403), (5252, 5356)]