20466173

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{89}}^1$

素因数の和:154

約数の個数: 36

約数和(自身を含む): 27363420

約数和(自身を除く): 6897247

約数列:

[1, 7, 13, 19, 49, 89, 91, 133, 247, 361, 623, 637, 931, 1157, 1691, 1729, 2527, 4361, 4693, 8099, 11837, 12103, 17689, 21983, 32129, 32851, 56693, 82859, 153881, 224903, 229957, 417677, 1077167, 1574321, 2923739, 20466173]

約数ペア:

[(1, 20466173), (7, 2923739), (13, 1574321), (19, 1077167), (49, 417677), (89, 229957), (91, 224903), (133, 153881), (247, 82859), (361, 56693), (623, 32851), (637, 32129), (931, 21983), (1157, 17689), (1691, 12103), (1729, 11837), (2527, 8099), (4361, 4693)]