21212541

素因数分解:

$3^2\times 7^2\times {\mathrm{103}}^1\times {\mathrm{467}}^1$

素因数の和:590

約数の個数: 36

約数和(自身を含む): 36065952

約数和(自身を除く): 14853411

約数列:

[1, 3, 7, 9, 21, 49, 63, 103, 147, 309, 441, 467, 721, 927, 1401, 2163, 3269, 4203, 5047, 6489, 9807, 15141, 22883, 29421, 45423, 48101, 68649, 144303, 205947, 336707, 432909, 1010121, 2356949, 3030363, 7070847, 21212541]

約数ペア:

[(1, 21212541), (3, 7070847), (7, 3030363), (9, 2356949), (21, 1010121), (49, 432909), (63, 336707), (103, 205947), (147, 144303), (309, 68649), (441, 48101), (467, 45423), (721, 29421), (927, 22883), (1401, 15141), (2163, 9807), (3269, 6489), (4203, 5047)]