209907981

素因数分解:

$3^2\times {\mathrm{131}}^1\times {\mathrm{178039}}^1$

素因数の和:178176

約数の個数: 12

約数和(自身を含む): 305516640

約数和(自身を除く): 95608659

約数列:

[1, 3, 9, 131, 393, 1179, 178039, 534117, 1602351, 23323109, 69969327, 209907981]

約数ペア:

[(1, 209907981), (3, 69969327), (9, 23323109), (131, 1602351), (393, 534117), (1179, 178039)]