17880021

素因数分解:

$3^4\times {\mathrm{107}}^1\times {\mathrm{2063}}^1$

素因数の和:2182

約数の個数: 20

約数和(自身を含む): 26972352

約数和(自身を除く): 9092331

約数列:

[1, 3, 9, 27, 81, 107, 321, 963, 2063, 2889, 6189, 8667, 18567, 55701, 167103, 220741, 662223, 1986669, 5960007, 17880021]

約数ペア:

[(1, 17880021), (3, 5960007), (9, 1986669), (27, 662223), (81, 220741), (107, 167103), (321, 55701), (963, 18567), (2063, 8667), (2889, 6189)]