19712933991

素因数分解:

$3^2\times {\mathrm{139}}^1\times {\mathrm{1621}}^1\times {\mathrm{9721}}^1$

素因数の和:11487

約数の個数: 24

約数和(自身を含む): 28699732880

約数和(自身を除く): 8986798889

約数列:

[1, 3, 9, 139, 417, 1251, 1621, 4863, 9721, 14589, 29163, 87489, 225319, 675957, 1351219, 2027871, 4053657, 12160971, 15757741, 47273223, 141819669, 2190325999, 6570977997, 19712933991]

約数ペア:

[(1, 19712933991), (3, 6570977997), (9, 2190325999), (139, 141819669), (417, 47273223), (1251, 15757741), (1621, 12160971), (4863, 4053657), (9721, 2027871), (14589, 1351219), (29163, 675957), (87489, 225319)]