19899411

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{22037}}^1$

素因数の和:22090

約数の個数: 16

約数和(自身を含む): 31029504

約数和(自身を除く): 11130093

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 22037, 66111, 154259, 462777, 947591, 2842773, 6633137, 19899411]

約数ペア:

[(1, 19899411), (3, 6633137), (7, 2842773), (21, 947591), (43, 462777), (129, 154259), (301, 66111), (903, 22037)]