81356120

素因数分解:

$2^3\times 5^1\times {\mathrm{2033903}}^1$

素因数の和:2033914

約数の個数: 16

約数和(自身を含む): 183051360

約数和(自身を除く): 101695240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2033903, 4067806, 8135612, 10169515, 16271224, 20339030, 40678060, 81356120]

約数ペア:

[(1, 81356120), (2, 40678060), (4, 20339030), (5, 16271224), (8, 10169515), (10, 8135612), (20, 4067806), (40, 2033903)]