16989993

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{5669}}^1$

素因数の和:5718

約数の個数: 20

約数和(自身を含む): 26070660

約数和(自身を除く): 9080667

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 999, 2997, 5669, 17007, 51021, 153063, 209753, 459189, 629259, 1887777, 5663331, 16989993]

約数ペア:

[(1, 16989993), (3, 5663331), (9, 1887777), (27, 629259), (37, 459189), (81, 209753), (111, 153063), (333, 51021), (999, 17007), (2997, 5669)]