81379676

素因数分解:

$2^2\times 7^1\times {\mathrm{661}}^1\times {\mathrm{4397}}^1$

素因数の和:5069

約数の個数: 24

約数和(自身を含む): 163042656

約数和(自身を除く): 81662980

約数列:

[1, 2, 4, 7, 14, 28, 661, 1322, 2644, 4397, 4627, 8794, 9254, 17588, 18508, 30779, 61558, 123116, 2906417, 5812834, 11625668, 20344919, 40689838, 81379676]

約数ペア:

[(1, 81379676), (2, 40689838), (4, 20344919), (7, 11625668), (14, 5812834), (28, 2906417), (661, 123116), (1322, 61558), (2644, 30779), (4397, 18508), (4627, 17588), (8794, 9254)]