209219913

素因数分解:

$3^2\times 7^1\times {\mathrm{193}}^1\times {\mathrm{17207}}^1$

素因数の和:17413

約数の個数: 24

約数和(自身を含む): 347188608

約数和(自身を除く): 137968695

約数列:

[1, 3, 7, 9, 21, 63, 193, 579, 1351, 1737, 4053, 12159, 17207, 51621, 120449, 154863, 361347, 1084041, 3320951, 9962853, 23246657, 29888559, 69739971, 209219913]

約数ペア:

[(1, 209219913), (3, 69739971), (7, 29888559), (9, 23246657), (21, 9962853), (63, 3320951), (193, 1084041), (579, 361347), (1351, 154863), (1737, 120449), (4053, 51621), (12159, 17207)]