18489789

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{3407}}^1$

素因数の和:3486

約数の個数: 20

約数和(自身を含む): 28041024

約数和(自身を除く): 9551235

約数列:

[1, 3, 9, 27, 67, 81, 201, 603, 1809, 3407, 5427, 10221, 30663, 91989, 228269, 275967, 684807, 2054421, 6163263, 18489789]

約数ペア:

[(1, 18489789), (3, 6163263), (9, 2054421), (27, 684807), (67, 275967), (81, 228269), (201, 91989), (603, 30663), (1809, 10221), (3407, 5427)]