81772840

素因数分解:

$2^3\times 5^1\times {\mathrm{2044321}}^1$

素因数の和:2044332

約数の個数: 16

約数和(自身を含む): 183988980

約数和(自身を除く): 102216140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2044321, 4088642, 8177284, 10221605, 16354568, 20443210, 40886420, 81772840]

約数ペア:

[(1, 81772840), (2, 40886420), (4, 20443210), (5, 16354568), (8, 10221605), (10, 8177284), (20, 4088642), (40, 2044321)]