208021121

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{385939}}^1$

素因数の和:385964

約数の個数: 12

約数和(自身を含む): 263982960

約数和(自身を除く): 55961839

約数列:

[1, 7, 11, 49, 77, 539, 385939, 2701573, 4245329, 18911011, 29717303, 208021121]

約数ペア:

[(1, 208021121), (7, 29717303), (11, 18911011), (49, 4245329), (77, 2701573), (539, 385939)]