639274384

素因数分解:

$2^4\times 7^2\times {\mathrm{815401}}^1$

素因数の和:815423

約数の個数: 30

約数和(自身を含む): 1440815334

約数和(自身を除く): 801540950

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784, 815401, 1630802, 3261604, 5707807, 6523208, 11415614, 13046416, 22831228, 39954649, 45662456, 79909298, 91324912, 159818596, 319637192, 639274384]

約数ペア:

[(1, 639274384), (2, 319637192), (4, 159818596), (7, 91324912), (8, 79909298), (14, 45662456), (16, 39954649), (28, 22831228), (49, 13046416), (56, 11415614), (98, 6523208), (112, 5707807), (196, 3261604), (392, 1630802), (784, 815401)]