20989746

素因数分解:

$2^1\times 3^3\times {\mathrm{388699}}^1$

素因数の和:388710

約数の個数: 16

約数和(自身を含む): 46644000

約数和(自身を除く): 25654254

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 388699, 777398, 1166097, 2332194, 3498291, 6996582, 10494873, 20989746]

約数ペア:

[(1, 20989746), (2, 10494873), (3, 6996582), (6, 3498291), (9, 2332194), (18, 1166097), (27, 777398), (54, 388699)]