20688789

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13339}}^1$

素因数の和:13400

約数の個数: 16

約数和(自身を含む): 30735360

約数和(自身を除く): 10046571

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13339, 40017, 146729, 440187, 626933, 1880799, 6896263, 20688789]

約数ペア:

[(1, 20688789), (3, 6896263), (11, 1880799), (33, 626933), (47, 440187), (141, 146729), (517, 40017), (1551, 13339)]