20489841

素因数分解:

$3^4\times {\mathrm{131}}^1\times {\mathrm{1931}}^1$

素因数の和:2074

約数の個数: 20

約数和(自身を含む): 30857904

約数和(自身を除く): 10368063

約数列:

[1, 3, 9, 27, 81, 131, 393, 1179, 1931, 3537, 5793, 10611, 17379, 52137, 156411, 252961, 758883, 2276649, 6829947, 20489841]

約数ペア:

[(1, 20489841), (3, 6829947), (9, 2276649), (27, 758883), (81, 252961), (131, 156411), (393, 52137), (1179, 17379), (1931, 10611), (3537, 5793)]