18991295

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{373}}^1\times {\mathrm{599}}^1$

素因数の和:994

約数の個数: 16

約数和(自身を含む): 24235200

約数和(自身を除く): 5243905

約数列:

[1, 5, 17, 85, 373, 599, 1865, 2995, 6341, 10183, 31705, 50915, 223427, 1117135, 3798259, 18991295]

約数ペア:

[(1, 18991295), (5, 3798259), (17, 1117135), (85, 223427), (373, 50915), (599, 31705), (1865, 10183), (2995, 6341)]