209517

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{907}}^1$

素因数の和:928

約数の個数: 16

約数和(自身を含む): 348672

約数和(自身を除く): 139155

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 907, 2721, 6349, 9977, 19047, 29931, 69839, 209517]

約数ペア:

[(1, 209517), (3, 69839), (7, 29931), (11, 19047), (21, 9977), (33, 6349), (77, 2721), (231, 907)]