21000887971

素因数分解:

$7^1\times {\mathrm{449}}^1\times {\mathrm{457}}^1\times {\mathrm{14621}}^1$

素因数の和:15534

約数の個数: 16

約数和(自身を含む): 24108753600

約数和(自身を除く): 3107865629

約数列:

[1, 7, 449, 457, 3143, 3199, 14621, 102347, 205193, 1436351, 6564829, 6681797, 45953803, 46772579, 3000126853, 21000887971]

約数ペア:

[(1, 21000887971), (7, 3000126853), (449, 46772579), (457, 45953803), (3143, 6681797), (3199, 6564829), (14621, 1436351), (102347, 205193)]