418201980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{995719}}^1$

素因数の和:995738

約数の個数: 48

約数和(自身を含む): 1338247680

約数和(自身を除く): 920045700

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, 995719, 1991438, 2987157, 3982876, 4978595, 5974314, 6970033, 9957190, 11948628, 13940066, 14935785, 19914380, 20910099, 27880132, 29871570, 34850165, 41820198, 59743140, 69700330, 83640396, 104550495, 139400660, 209100990, 418201980]

約数ペア:

[(1, 418201980), (2, 209100990), (3, 139400660), (4, 104550495), (5, 83640396), (6, 69700330), (7, 59743140), (10, 41820198), (12, 34850165), (14, 29871570), (15, 27880132), (20, 20910099), (21, 19914380), (28, 14935785), (30, 13940066), (35, 11948628), (42, 9957190), (60, 6970033), (70, 5974314), (84, 4978595), (105, 3982876), (140, 2987157), (210, 1991438), (420, 995719)]