209041980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{497719}}^1$

素因数の和:497738

約数の個数: 48

約数和(自身を含む): 668935680

約数和(自身を除く): 459893700

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 497719, 995438, 1493157, 1990876, 2488595, 2986314, 3484033, 4977190, 5972628, 6968066, 7465785, 9954380, 10452099, 13936132, 14931570, 17420165, 20904198, 29863140, 34840330, 41808396, 52260495, 69680660, 104520990, 209041980]

約数ペア:

[(1, 209041980), (2, 104520990), (3, 69680660), (4, 52260495), (5, 41808396), (6, 34840330), (7, 29863140), (10, 20904198), (12, 17420165), (14, 14931570), (15, 13936132), (20, 10452099), (21, 9954380), (28, 7465785), (30, 6968066), (35, 5972628), (42, 4977190), (60, 3484033), (70, 2986314), (84, 2488595), (105, 1990876), (140, 1493157), (210, 995438), (420, 497719)]