21505119

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{5939}}^1$

素因数の和:6030

約数の個数: 16

約数和(自身を含む): 30792960

約数和(自身を除く): 9287841

約数列:

[1, 3, 17, 51, 71, 213, 1207, 3621, 5939, 17817, 100963, 302889, 421669, 1265007, 7168373, 21505119]

約数ペア:

[(1, 21505119), (3, 7168373), (17, 1265007), (51, 421669), (71, 302889), (213, 100963), (1207, 17817), (3621, 5939)]