18911739

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{81869}}^1$

素因数の和:81890

約数の個数: 16

約数和(自身を含む): 31438080

約数和(自身を除く): 12526341

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 81869, 245607, 573083, 900559, 1719249, 2701677, 6303913, 18911739]

約数ペア:

[(1, 18911739), (3, 6303913), (7, 2701677), (11, 1719249), (21, 900559), (33, 573083), (77, 245607), (231, 81869)]