21337245

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11027}}^1$

素因数の和:11081

約数の個数: 24

約数和(自身を含む): 37848096

約数和(自身を除く): 16510851

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 11027, 33081, 55135, 99243, 165405, 474161, 496215, 1422483, 2370805, 4267449, 7112415, 21337245]

約数ペア:

[(1, 21337245), (3, 7112415), (5, 4267449), (9, 2370805), (15, 1422483), (43, 496215), (45, 474161), (129, 165405), (215, 99243), (387, 55135), (645, 33081), (1935, 11027)]