21165969

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1301}}^1$

素因数の和:1361

約数の個数: 32

約数和(自身を含む): 33747840

約数和(自身を除く): 12581871

約数列:

[1, 3, 11, 17, 29, 33, 51, 87, 187, 319, 493, 561, 957, 1301, 1479, 3903, 5423, 14311, 16269, 22117, 37729, 42933, 66351, 113187, 243287, 415019, 641393, 729861, 1245057, 1924179, 7055323, 21165969]

約数ペア:

[(1, 21165969), (3, 7055323), (11, 1924179), (17, 1245057), (29, 729861), (33, 641393), (51, 415019), (87, 243287), (187, 113187), (319, 66351), (493, 42933), (561, 37729), (957, 22117), (1301, 16269), (1479, 14311), (3903, 5423)]