20784141

素因数分解:

$3^3\times 7^1\times {\mathrm{277}}^1\times {\mathrm{397}}^1$

素因数の和:690

約数の個数: 32

約数和(自身を含む): 35406080

約数和(自身を除く): 14621939

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 277, 397, 831, 1191, 1939, 2493, 2779, 3573, 5817, 7479, 8337, 10719, 17451, 25011, 52353, 75033, 109969, 329907, 769783, 989721, 2309349, 2969163, 6928047, 20784141]

約数ペア:

[(1, 20784141), (3, 6928047), (7, 2969163), (9, 2309349), (21, 989721), (27, 769783), (63, 329907), (189, 109969), (277, 75033), (397, 52353), (831, 25011), (1191, 17451), (1939, 10719), (2493, 8337), (2779, 7479), (3573, 5817)]