209878011

素因数分解:

$3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{14939}}^1$

素因数の和:15175

約数の個数: 24

約数和(自身を含む): 348042240

約数和(自身を除く): 138164229

約数列:

[1, 3, 7, 9, 21, 63, 223, 669, 1561, 2007, 4683, 14049, 14939, 44817, 104573, 134451, 313719, 941157, 3331397, 9994191, 23319779, 29982573, 69959337, 209878011]

約数ペア:

[(1, 209878011), (3, 69959337), (7, 29982573), (9, 23319779), (21, 9994191), (63, 3331397), (223, 941157), (669, 313719), (1561, 134451), (2007, 104573), (4683, 44817), (14049, 14939)]