21045519

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{4523}}^1$

素因数の和:4587

約数の個数: 24

約数和(自身を含む): 33875712

約数和(自身を除く): 12830193

約数列:

[1, 3, 9, 11, 33, 47, 99, 141, 423, 517, 1551, 4523, 4653, 13569, 40707, 49753, 149259, 212581, 447777, 637743, 1913229, 2338391, 7015173, 21045519]

約数ペア:

[(1, 21045519), (3, 7015173), (9, 2338391), (11, 1913229), (33, 637743), (47, 447777), (99, 212581), (141, 149259), (423, 49753), (517, 40707), (1551, 13569), (4523, 4653)]