209717655

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{1997311}}^1$

素因数の和:1997326

約数の個数: 16

約数和(自身を含む): 383483904

約数和(自身を除く): 173766249

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 1997311, 5991933, 9986555, 13981177, 29959665, 41943531, 69905885, 209717655]

約数ペア:

[(1, 209717655), (3, 69905885), (5, 41943531), (7, 29959665), (15, 13981177), (21, 9986555), (35, 5991933), (105, 1997311)]