20642116

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42649}}^1$

素因数の和:42675

約数の個数: 18

約数和(自身を含む): 39707150

約数和(自身を除く): 19065034

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42649, 85298, 170596, 469139, 938278, 1876556, 5160529, 10321058, 20642116]

約数ペア:

[(1, 20642116), (2, 10321058), (4, 5160529), (11, 1876556), (22, 938278), (44, 469139), (121, 170596), (242, 85298), (484, 42649)]