20217106581

素因数分解:

$3^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1543}}^1\times {\mathrm{2957}}^1$

素因数の和:4721

約数の個数: 32

約数和(自身を含む): 30983559168

約数和(自身を除く): 10766452587

約数列:

[1, 3, 7, 21, 211, 633, 1477, 1543, 2957, 4431, 4629, 8871, 10801, 20699, 32403, 62097, 325573, 623927, 976719, 1871781, 2279011, 4367489, 4562651, 6837033, 13102467, 13687953, 31938557, 95815671, 962719361, 2888158083, 6739035527, 20217106581]

約数ペア:

[(1, 20217106581), (3, 6739035527), (7, 2888158083), (21, 962719361), (211, 95815671), (633, 31938557), (1477, 13687953), (1543, 13102467), (2957, 6837033), (4431, 4562651), (4629, 4367489), (8871, 2279011), (10801, 1871781), (20699, 976719), (32403, 623927), (62097, 325573)]