20109188

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 40134528

約数和(自身を除く): 20025340

約数列:

[1, 2, 4, 11, 22, 41, 44, 71, 82, 142, 157, 164, 284, 314, 451, 628, 781, 902, 1562, 1727, 1804, 2911, 3124, 3454, 5822, 6437, 6908, 11147, 11644, 12874, 22294, 25748, 32021, 44588, 64042, 70807, 122617, 128084, 141614, 245234, 283228, 457027, 490468, 914054, 1828108, 5027297, 10054594, 20109188]

約数ペア:

[(1, 20109188), (2, 10054594), (4, 5027297), (11, 1828108), (22, 914054), (41, 490468), (44, 457027), (71, 283228), (82, 245234), (142, 141614), (157, 128084), (164, 122617), (284, 70807), (314, 64042), (451, 44588), (628, 32021), (781, 25748), (902, 22294), (1562, 12874), (1727, 11644), (1804, 11147), (2911, 6908), (3124, 6437), (3454, 5822)]