18720942

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{293}}^1\times {\mathrm{463}}^1$

素因数の和:784

約数の個数: 32

約数和(自身を含む): 39287808

約数和(自身を除く): 20566866

約数列:

[1, 2, 3, 6, 23, 46, 69, 138, 293, 463, 586, 879, 926, 1389, 1758, 2778, 6739, 10649, 13478, 20217, 21298, 31947, 40434, 63894, 135659, 271318, 406977, 813954, 3120157, 6240314, 9360471, 18720942]

約数ペア:

[(1, 18720942), (2, 9360471), (3, 6240314), (6, 3120157), (23, 813954), (46, 406977), (69, 271318), (138, 135659), (293, 63894), (463, 40434), (586, 31947), (879, 21298), (926, 20217), (1389, 13478), (1758, 10649), (2778, 6739)]