19999343

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 6611857

約数列:

[1, 7, 13, 19, 43, 91, 133, 247, 269, 301, 559, 817, 1729, 1883, 3497, 3913, 5111, 5719, 10621, 11567, 24479, 35777, 66443, 74347, 80969, 150371, 219773, 465101, 1052597, 1538411, 2857049, 19999343]

約数ペア:

[(1, 19999343), (7, 2857049), (13, 1538411), (19, 1052597), (43, 465101), (91, 219773), (133, 150371), (247, 80969), (269, 74347), (301, 66443), (559, 35777), (817, 24479), (1729, 11567), (1883, 10621), (3497, 5719), (3913, 5111)]