20806916

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{3541}}^1$

素因数の和:3671

約数の個数: 24

約数和(自身を含む): 39571224

約数和(自身を除く): 18764308

約数列:

[1, 2, 4, 13, 26, 52, 113, 226, 452, 1469, 2938, 3541, 5876, 7082, 14164, 46033, 92066, 184132, 400133, 800266, 1600532, 5201729, 10403458, 20806916]

約数ペア:

[(1, 20806916), (2, 10403458), (4, 5201729), (13, 1600532), (26, 800266), (52, 400133), (113, 184132), (226, 92066), (452, 46033), (1469, 14164), (2938, 7082), (3541, 5876)]