19737641

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{3329}}^1$

素因数の和:3365

約数の個数: 18

約数和(自身を含む): 25244730

約数和(自身を除く): 5507089

約数列:

[1, 7, 11, 49, 77, 121, 539, 847, 3329, 5929, 23303, 36619, 163121, 256333, 402809, 1794331, 2819663, 19737641]

約数ペア:

[(1, 19737641), (7, 2819663), (11, 1794331), (49, 402809), (77, 256333), (121, 163121), (539, 36619), (847, 23303), (3329, 5929)]