20394380

素因数分解:

$2^2\times 5^1\times {\mathrm{683}}^1\times {\mathrm{1493}}^1$

素因数の和:2185

約数の個数: 24

約数和(自身を含む): 42919632

約数和(自身を除く): 22525252

約数列:

[1, 2, 4, 5, 10, 20, 683, 1366, 1493, 2732, 2986, 3415, 5972, 6830, 7465, 13660, 14930, 29860, 1019719, 2039438, 4078876, 5098595, 10197190, 20394380]

約数ペア:

[(1, 20394380), (2, 10197190), (4, 5098595), (5, 4078876), (10, 2039438), (20, 1019719), (683, 29860), (1366, 14930), (1493, 13660), (2732, 7465), (2986, 6830), (3415, 5972)]