2821980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{6719}}^1$

素因数の和:6738

約数の個数: 48

約数和(自身を含む): 9031680

約数和(自身を除く): 6209700

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, 6719, 13438, 20157, 26876, 33595, 40314, 47033, 67190, 80628, 94066, 100785, 134380, 141099, 188132, 201570, 235165, 282198, 403140, 470330, 564396, 705495, 940660, 1410990, 2821980]

約数ペア:

[(1, 2821980), (2, 1410990), (3, 940660), (4, 705495), (5, 564396), (6, 470330), (7, 403140), (10, 282198), (12, 235165), (14, 201570), (15, 188132), (20, 141099), (21, 134380), (28, 100785), (30, 94066), (35, 80628), (42, 67190), (60, 47033), (70, 40314), (84, 33595), (105, 26876), (140, 20157), (210, 13438), (420, 6719)]