21231903

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{859}}^1$

素因数の和:987

約数の個数: 32

約数和(自身を含む): 35665920

約数和(自身を除く): 14434017

約数列:

[1, 3, 7, 11, 21, 33, 77, 107, 231, 321, 749, 859, 1177, 2247, 2577, 3531, 6013, 8239, 9449, 18039, 24717, 28347, 66143, 91913, 198429, 275739, 643391, 1011043, 1930173, 3033129, 7077301, 21231903]

約数ペア:

[(1, 21231903), (3, 7077301), (7, 3033129), (11, 1930173), (21, 1011043), (33, 643391), (77, 275739), (107, 198429), (231, 91913), (321, 66143), (749, 28347), (859, 24717), (1177, 18039), (2247, 9449), (2577, 8239), (3531, 6013)]