21042489

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{8053}}^1$

素因数の和:8136

約数の個数: 16

約数和(自身を含む): 30669632

約数和(自身を除く): 9627143

約数列:

[1, 3, 13, 39, 67, 201, 871, 2613, 8053, 24159, 104689, 314067, 539551, 1618653, 7014163, 21042489]

約数ペア:

[(1, 21042489), (3, 7014163), (13, 1618653), (39, 539551), (67, 314067), (201, 104689), (871, 24159), (2613, 8053)]