21028677

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^2\times {\mathrm{223}}^1$

素因数の和:329

約数の個数: 24

約数和(自身を含む): 30530304

約数和(自身を除く): 9501627

約数列:

[1, 3, 17, 43, 51, 129, 223, 669, 731, 1849, 2193, 3791, 5547, 9589, 11373, 28767, 31433, 94299, 163013, 412327, 489039, 1236981, 7009559, 21028677]

約数ペア:

[(1, 21028677), (3, 7009559), (17, 1236981), (43, 489039), (51, 412327), (129, 163013), (223, 94299), (669, 31433), (731, 28767), (1849, 11373), (2193, 9589), (3791, 5547)]