21340485

素因数分解:

$3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4889}}^1$

素因数の和:4997

約数の個数: 24

約数和(自身を含む): 37379160

約数和(自身を除く): 16038675

約数列:

[1, 3, 5, 9, 15, 45, 97, 291, 485, 873, 1455, 4365, 4889, 14667, 24445, 44001, 73335, 220005, 474233, 1422699, 2371165, 4268097, 7113495, 21340485]

約数ペア:

[(1, 21340485), (3, 7113495), (5, 4268097), (9, 2371165), (15, 1422699), (45, 474233), (97, 220005), (291, 73335), (485, 44001), (873, 24445), (1455, 14667), (4365, 4889)]