18914481

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2087}}^1$

素因数の和:2165

約数の個数: 24

約数和(自身を含む): 29315520

約数和(自身を除く): 10401039

約数列:

[1, 3, 9, 19, 53, 57, 159, 171, 477, 1007, 2087, 3021, 6261, 9063, 18783, 39653, 110611, 118959, 331833, 356877, 995499, 2101609, 6304827, 18914481]

約数ペア:

[(1, 18914481), (3, 6304827), (9, 2101609), (19, 995499), (53, 356877), (57, 331833), (159, 118959), (171, 110611), (477, 39653), (1007, 18783), (2087, 9063), (3021, 6261)]