21014559

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{8369}}^1$

素因数の和:8412

約数の個数: 20

約数和(自身を含む): 32408640

約数和(自身を除く): 11394081

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 8369, 25107, 75321, 225963, 259439, 677889, 778317, 2334951, 7004853, 21014559]

約数ペア:

[(1, 21014559), (3, 7004853), (9, 2334951), (27, 778317), (31, 677889), (81, 259439), (93, 225963), (279, 75321), (837, 25107), (2511, 8369)]