19985810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{3271}}^1$

素因数の和:3338

約数の個数: 32

約数和(自身を含む): 39578112

約数和(自身を除く): 19592302

約数列:

[1, 2, 5, 10, 13, 26, 47, 65, 94, 130, 235, 470, 611, 1222, 3055, 3271, 6110, 6542, 16355, 32710, 42523, 85046, 153737, 212615, 307474, 425230, 768685, 1537370, 1998581, 3997162, 9992905, 19985810]

約数ペア:

[(1, 19985810), (2, 9992905), (5, 3997162), (10, 1998581), (13, 1537370), (26, 768685), (47, 425230), (65, 307474), (94, 212615), (130, 153737), (235, 85046), (470, 42523), (611, 32710), (1222, 16355), (3055, 6542), (3271, 6110)]