18891081

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{1103}}^1$

素因数の和:1293

約数の個数: 24

約数和(自身を含む): 29966976

約数和(自身を除く): 11075895

約数列:

[1, 3, 9, 11, 33, 99, 173, 519, 1103, 1557, 1903, 3309, 5709, 9927, 12133, 17127, 36399, 109197, 190819, 572457, 1717371, 2099009, 6297027, 18891081]

約数ペア:

[(1, 18891081), (3, 6297027), (9, 2099009), (11, 1717371), (33, 572457), (99, 190819), (173, 109197), (519, 36399), (1103, 17127), (1557, 12133), (1903, 9927), (3309, 5709)]