20417217

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{971}}^1$

素因数の和:1180

約数の個数: 16

約数和(自身を含む): 28055808

約数和(自身を除く): 7638591

約数列:

[1, 3, 43, 129, 163, 489, 971, 2913, 7009, 21027, 41753, 125259, 158273, 474819, 6805739, 20417217]

約数ペア:

[(1, 20417217), (3, 6805739), (43, 474819), (129, 158273), (163, 125259), (489, 41753), (971, 21027), (2913, 7009)]