20973458

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{9439}}^1$

素因数の和:9553

約数の個数: 16

約数和(自身を含む): 34663680

約数和(自身を除く): 13690222

約数列:

[1, 2, 11, 22, 101, 202, 1111, 2222, 9439, 18878, 103829, 207658, 953339, 1906678, 10486729, 20973458]

約数ペア:

[(1, 20973458), (2, 10486729), (11, 1906678), (22, 953339), (101, 207658), (202, 103829), (1111, 18878), (2222, 9439)]