199971009

素因数分解:

$3^2\times 7^2\times {\mathrm{277}}^1\times {\mathrm{1637}}^1$

素因数の和:1934

約数の個数: 36

約数和(自身を含む): 337424724

約数和(自身を除く): 137453715

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 277, 441, 831, 1637, 1939, 2493, 4911, 5817, 11459, 13573, 14733, 17451, 34377, 40719, 80213, 103131, 122157, 240639, 453449, 721917, 1360347, 3174143, 4081041, 9522429, 22219001, 28567287, 66657003, 199971009]

約数ペア:

[(1, 199971009), (3, 66657003), (7, 28567287), (9, 22219001), (21, 9522429), (49, 4081041), (63, 3174143), (147, 1360347), (277, 721917), (441, 453449), (831, 240639), (1637, 122157), (1939, 103131), (2493, 80213), (4911, 40719), (5817, 34377), (11459, 17451), (13573, 14733)]