19787481

素因数分解:

$3^2\times 7^1\times {\mathrm{443}}^1\times {\mathrm{709}}^1$

素因数の和:1165

約数の個数: 24

約数和(自身を含む): 32784960

約数和(自身を除く): 12997479

約数列:

[1, 3, 7, 9, 21, 63, 443, 709, 1329, 2127, 3101, 3987, 4963, 6381, 9303, 14889, 27909, 44667, 314087, 942261, 2198609, 2826783, 6595827, 19787481]

約数ペア:

[(1, 19787481), (3, 6595827), (7, 2826783), (9, 2198609), (21, 942261), (63, 314087), (443, 44667), (709, 27909), (1329, 14889), (2127, 9303), (3101, 6381), (3987, 4963)]