206440420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{240047}}^1$

素因数の和:240099

約数の個数: 24

約数和(自身を含む): 443608704

約数和(自身を除く): 237168284

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 240047, 480094, 960188, 1200235, 2400470, 4800940, 10322021, 20644042, 41288084, 51610105, 103220210, 206440420]

約数ペア:

[(1, 206440420), (2, 103220210), (4, 51610105), (5, 41288084), (10, 20644042), (20, 10322021), (43, 4800940), (86, 2400470), (172, 1200235), (215, 960188), (430, 480094), (860, 240047)]