20684727

素因数分解:

$3^4\times 7^1\times {\mathrm{191}}^2$

素因数の和:401

約数の個数: 30

約数和(自身を含む): 35499464

約数和(自身を除く): 14814737

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 191, 567, 573, 1337, 1719, 4011, 5157, 12033, 15471, 36099, 36481, 108297, 109443, 255367, 328329, 766101, 984987, 2298303, 2954961, 6894909, 20684727]

約数ペア:

[(1, 20684727), (3, 6894909), (7, 2954961), (9, 2298303), (21, 984987), (27, 766101), (63, 328329), (81, 255367), (189, 109443), (191, 108297), (567, 36481), (573, 36099), (1337, 15471), (1719, 12033), (4011, 5157)]