21742329

素因数分解:

$3^1\times 7^2\times {\mathrm{353}}^1\times {\mathrm{419}}^1$

素因数の和:789

約数の個数: 24

約数和(自身を含む): 33899040

約数和(自身を除く): 12156711

約数列:

[1, 3, 7, 21, 49, 147, 353, 419, 1059, 1257, 2471, 2933, 7413, 8799, 17297, 20531, 51891, 61593, 147907, 443721, 1035349, 3106047, 7247443, 21742329]

約数ペア:

[(1, 21742329), (3, 7247443), (7, 3106047), (21, 1035349), (49, 443721), (147, 147907), (353, 61593), (419, 51891), (1059, 20531), (1257, 17297), (2471, 8799), (2933, 7413)]