28391349

素因数分解:

$3^1\times 7^1\times {\mathrm{677}}^1\times {\mathrm{1997}}^1$

素因数の和:2684

約数の個数: 16

約数和(自身を含む): 43348608

約数和(自身を除く): 14957259

約数列:

[1, 3, 7, 21, 677, 1997, 2031, 4739, 5991, 13979, 14217, 41937, 1351969, 4055907, 9463783, 28391349]

約数ペア:

[(1, 28391349), (3, 9463783), (7, 4055907), (21, 1351969), (677, 41937), (1997, 14217), (2031, 13979), (4739, 5991)]