18718821

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{17189}}^1$

素因数の和:17217

約数の個数: 18

約数和(自身を含む): 29721510

約数和(自身を除く): 11002689

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 17189, 51567, 154701, 189079, 567237, 1701711, 2079869, 6239607, 18718821]

約数ペア:

[(1, 18718821), (3, 6239607), (9, 2079869), (11, 1701711), (33, 567237), (99, 189079), (121, 154701), (363, 51567), (1089, 17189)]