20428177

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{359}}^1\times {\mathrm{739}}^1$

素因数の和:1116

約数の個数: 16

約数和(自身を含む): 25574400

約数和(自身を除く): 5146223

約数列:

[1, 7, 11, 77, 359, 739, 2513, 3949, 5173, 8129, 27643, 56903, 265301, 1857107, 2918311, 20428177]

約数ペア:

[(1, 20428177), (7, 2918311), (11, 1857107), (77, 265301), (359, 56903), (739, 27643), (2513, 8129), (3949, 5173)]