81655480

素因数分解:

$2^3\times 5^1\times {\mathrm{2041387}}^1$

素因数の和:2041398

約数の個数: 16

約数和(自身を含む): 183724920

約数和(自身を除く): 102069440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2041387, 4082774, 8165548, 10206935, 16331096, 20413870, 40827740, 81655480]

約数ペア:

[(1, 81655480), (2, 40827740), (4, 20413870), (5, 16331096), (8, 10206935), (10, 8165548), (20, 4082774), (40, 2041387)]