20979167

素因数分解:

${\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{257}}^1$

素因数の和:490

約数の個数: 16

約数和(自身を含む): 23665824

約数和(自身を除く): 2686657

約数列:

[1, 11, 41, 181, 257, 451, 1991, 2827, 7421, 10537, 46517, 81631, 115907, 511687, 1907197, 20979167]

約数ペア:

[(1, 20979167), (11, 1907197), (41, 511687), (181, 115907), (257, 81631), (451, 46517), (1991, 10537), (2827, 7421)]