81361640

素因数分解:

$2^3\times 5^1\times {\mathrm{2034041}}^1$

素因数の和:2034052

約数の個数: 16

約数和(自身を含む): 183063780

約数和(自身を除く): 101702140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2034041, 4068082, 8136164, 10170205, 16272328, 20340410, 40680820, 81361640]

約数ペア:

[(1, 81361640), (2, 40680820), (4, 20340410), (5, 16272328), (8, 10170205), (10, 8136164), (20, 4068082), (40, 2034041)]