18984980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{135607}}^1$

素因数の和:135623

約数の個数: 24

約数和(自身を含む): 45564288

約数和(自身を除く): 26579308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 135607, 271214, 542428, 678035, 949249, 1356070, 1898498, 2712140, 3796996, 4746245, 9492490, 18984980]

約数ペア:

[(1, 18984980), (2, 9492490), (4, 4746245), (5, 3796996), (7, 2712140), (10, 1898498), (14, 1356070), (20, 949249), (28, 678035), (35, 542428), (70, 271214), (140, 135607)]