21619521

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{10399}}^1$

素因数の和:10426

約数の個数: 32

約数和(自身を含む): 39936000

約数和(自身を除く): 18316479

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 189, 231, 297, 693, 2079, 10399, 31197, 72793, 93591, 114389, 218379, 280773, 343167, 655137, 800723, 1029501, 1965411, 2402169, 3088503, 7206507, 21619521]

約数ペア:

[(1, 21619521), (3, 7206507), (7, 3088503), (9, 2402169), (11, 1965411), (21, 1029501), (27, 800723), (33, 655137), (63, 343167), (77, 280773), (99, 218379), (189, 114389), (231, 93591), (297, 72793), (693, 31197), (2079, 10399)]