20741007

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{223}}^1$

素因数の和:379

約数の個数: 32

約数和(自身を含む): 32800768

約数和(自身を除く): 12059761

約数列:

[1, 3, 7, 21, 43, 103, 129, 223, 301, 309, 669, 721, 903, 1561, 2163, 4429, 4683, 9589, 13287, 22969, 28767, 31003, 67123, 68907, 93009, 160783, 201369, 482349, 987667, 2963001, 6913669, 20741007]

約数ペア:

[(1, 20741007), (3, 6913669), (7, 2963001), (21, 987667), (43, 482349), (103, 201369), (129, 160783), (223, 93009), (301, 68907), (309, 67123), (669, 31003), (721, 28767), (903, 22969), (1561, 13287), (2163, 9589), (4429, 4683)]