208491521

素因数分解:

$7^3\times {\mathrm{139}}^1\times {\mathrm{4373}}^1$

素因数の和:4533

約数の個数: 16

約数和(自身を含む): 244944000

約数和(自身を除く): 36452479

約数列:

[1, 7, 49, 139, 343, 973, 4373, 6811, 30611, 47677, 214277, 607847, 1499939, 4254929, 29784503, 208491521]

約数ペア:

[(1, 208491521), (7, 29784503), (49, 4254929), (139, 1499939), (343, 607847), (973, 214277), (4373, 47677), (6811, 30611)]