20820858

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{80701}}^1$

素因数の和:80749

約数の個数: 16

約数和(自身を含む): 42610656

約数和(自身を除く): 21789798

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 80701, 161402, 242103, 484206, 3470143, 6940286, 10410429, 20820858]

約数ペア:

[(1, 20820858), (2, 10410429), (3, 6940286), (6, 3470143), (43, 484206), (86, 242103), (129, 161402), (258, 80701)]