20545745

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{19661}}^1$

素因数の和:19696

約数の個数: 16

約数和(自身を含む): 28313280

約数和(自身を除く): 7767535

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 19661, 98305, 216271, 373559, 1081355, 1867795, 4109149, 20545745]

約数ペア:

[(1, 20545745), (5, 4109149), (11, 1867795), (19, 1081355), (55, 373559), (95, 216271), (209, 98305), (1045, 19661)]