20218583

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{2707}}^1$

素因数の和:2822

約数の個数: 16

約数和(自身を含む): 25476864

約数和(自身を除く): 5258281

約数列:

[1, 7, 11, 77, 97, 679, 1067, 2707, 7469, 18949, 29777, 208439, 262579, 1838053, 2888369, 20218583]

約数ペア:

[(1, 20218583), (7, 2888369), (11, 1838053), (77, 262579), (97, 208439), (679, 29777), (1067, 18949), (2707, 7469)]