21007029239

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1\times {\mathrm{407579}}^1$

素因数の和:407822

約数の個数: 16

約数和(自身を含む): 24780864000

約数和(自身を除く): 3773834761

約数列:

[1, 7, 37, 199, 259, 1393, 7363, 51541, 407579, 2853053, 15080423, 81108221, 105562961, 567757547, 3001004177, 21007029239]

約数ペア:

[(1, 21007029239), (7, 3001004177), (37, 567757547), (199, 105562961), (259, 81108221), (1393, 15080423), (7363, 2853053), (51541, 407579)]