2001392420

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{244669}}^1$

素因数の和:245087

約数の個数: 24

約数和(自身を含む): 4213217400

約数和(自身を除く): 2211824980

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 8180, 244669, 489338, 978676, 1223345, 2446690, 4893380, 100069621, 200139242, 400278484, 500348105, 1000696210, 2001392420]

約数ペア:

[(1, 2001392420), (2, 1000696210), (4, 500348105), (5, 400278484), (10, 200139242), (20, 100069621), (409, 4893380), (818, 2446690), (1636, 1223345), (2045, 978676), (4090, 489338), (8180, 244669)]