21219759

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1931}}^1$

素因数の和:1988

約数の個数: 32

約数和(自身を含む): 35239680

約数和(自身を除く): 14019921

約数列:

[1, 3, 9, 11, 27, 33, 37, 99, 111, 297, 333, 407, 999, 1221, 1931, 3663, 5793, 10989, 17379, 21241, 52137, 63723, 71447, 191169, 214341, 573507, 643023, 785917, 1929069, 2357751, 7073253, 21219759]

約数ペア:

[(1, 21219759), (3, 7073253), (9, 2357751), (11, 1929069), (27, 785917), (33, 643023), (37, 573507), (99, 214341), (111, 191169), (297, 71447), (333, 63723), (407, 52137), (999, 21241), (1221, 17379), (1931, 10989), (3663, 5793)]