20138139

素因数分解:

$3^5\times 7^1\times {\mathrm{11839}}^1$

素因数の和:11861

約数の個数: 24

約数和(自身を含む): 34478080

約数和(自身を除く): 14339941

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 11839, 35517, 82873, 106551, 248619, 319653, 745857, 958959, 2237571, 2876877, 6712713, 20138139]

約数ペア:

[(1, 20138139), (3, 6712713), (7, 2876877), (9, 2237571), (21, 958959), (27, 745857), (63, 319653), (81, 248619), (189, 106551), (243, 82873), (567, 35517), (1701, 11839)]