18627921

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{727}}^1$

素因数の和:822

約数の個数: 32

約数和(自身を含む): 30168320

約数和(自身を除く): 11540399

約数列:

[1, 3, 9, 13, 27, 39, 73, 117, 219, 351, 657, 727, 949, 1971, 2181, 2847, 6543, 8541, 9451, 19629, 25623, 28353, 53071, 85059, 159213, 255177, 477639, 689923, 1432917, 2069769, 6209307, 18627921]

約数ペア:

[(1, 18627921), (3, 6209307), (9, 2069769), (13, 1432917), (27, 689923), (39, 477639), (73, 255177), (117, 159213), (219, 85059), (351, 53071), (657, 28353), (727, 25623), (949, 19629), (1971, 9451), (2181, 8541), (2847, 6543)]