21138180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50329}}^1$

素因数の和:50348

約数の個数: 48

約数和(自身を含む): 67643520

約数和(自身を除く): 46505340

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, 50329, 100658, 150987, 201316, 251645, 301974, 352303, 503290, 603948, 704606, 754935, 1006580, 1056909, 1409212, 1509870, 1761515, 2113818, 3019740, 3523030, 4227636, 5284545, 7046060, 10569090, 21138180]

約数ペア:

[(1, 21138180), (2, 10569090), (3, 7046060), (4, 5284545), (5, 4227636), (6, 3523030), (7, 3019740), (10, 2113818), (12, 1761515), (14, 1509870), (15, 1409212), (20, 1056909), (21, 1006580), (28, 754935), (30, 704606), (35, 603948), (42, 503290), (60, 352303), (70, 301974), (84, 251645), (105, 201316), (140, 150987), (210, 100658), (420, 50329)]