20798001

素因数分解:

$3^2\times 7^2\times {\mathrm{47161}}^1$

素因数の和:47181

約数の個数: 18

約数和(自身を含む): 34947042

約数和(自身を除く): 14149041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 47161, 141483, 330127, 424449, 990381, 2310889, 2971143, 6932667, 20798001]

約数ペア:

[(1, 20798001), (3, 6932667), (7, 2971143), (9, 2310889), (21, 990381), (49, 424449), (63, 330127), (147, 141483), (441, 47161)]