18087321

素因数分解:

$3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1733}}^1$

素因数の和:1821

約数の個数: 24

約数和(自身を含む): 28465344

約数和(自身を除く): 10378023

約数列:

[1, 3, 7, 21, 49, 71, 147, 213, 497, 1491, 1733, 3479, 5199, 10437, 12131, 36393, 84917, 123043, 254751, 369129, 861301, 2583903, 6029107, 18087321]

約数ペア:

[(1, 18087321), (3, 6029107), (7, 2583903), (21, 861301), (49, 369129), (71, 254751), (147, 123043), (213, 84917), (497, 36393), (1491, 12131), (1733, 10437), (3479, 5199)]