21687165

素因数分解:

$3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4679}}^1$

素因数の和:4793

約数の個数: 24

約数和(自身を含む): 37964160

約数和(自身を除く): 16276995

約数列:

[1, 3, 5, 9, 15, 45, 103, 309, 515, 927, 1545, 4635, 4679, 14037, 23395, 42111, 70185, 210555, 481937, 1445811, 2409685, 4337433, 7229055, 21687165]

約数ペア:

[(1, 21687165), (3, 7229055), (5, 4337433), (9, 2409685), (15, 1445811), (45, 481937), (103, 210555), (309, 70185), (515, 42111), (927, 23395), (1545, 14037), (4635, 4679)]