21427803

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{3257}}^1$

素因数の和:3323

約数の個数: 24

約数和(自身を含む): 33544368

約数和(自身を除く): 12116565

約数列:

[1, 3, 9, 17, 43, 51, 129, 153, 387, 731, 2193, 3257, 6579, 9771, 29313, 55369, 140051, 166107, 420153, 498321, 1260459, 2380867, 7142601, 21427803]

約数ペア:

[(1, 21427803), (3, 7142601), (9, 2380867), (17, 1260459), (43, 498321), (51, 420153), (129, 166107), (153, 140051), (387, 55369), (731, 29313), (2193, 9771), (3257, 6579)]