20754321

素因数分解:

$3^1\times 7^1\times {\mathrm{683}}^1\times {\mathrm{1447}}^1$

素因数の和:2140

約数の個数: 16

約数和(自身を含む): 31693824

約数和(自身を除く): 10939503

約数列:

[1, 3, 7, 21, 683, 1447, 2049, 4341, 4781, 10129, 14343, 30387, 988301, 2964903, 6918107, 20754321]

約数ペア:

[(1, 20754321), (3, 6918107), (7, 2964903), (21, 988301), (683, 30387), (1447, 14343), (2049, 10129), (4341, 4781)]