18994520

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3187}}^1$

素因数の和:3347

約数の個数: 32

約数和(自身を含む): 43038000

約数和(自身を除く): 24043480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 3187, 5960, 6374, 12748, 15935, 25496, 31870, 63740, 127480, 474863, 949726, 1899452, 2374315, 3798904, 4748630, 9497260, 18994520]

約数ペア:

[(1, 18994520), (2, 9497260), (4, 4748630), (5, 3798904), (8, 2374315), (10, 1899452), (20, 949726), (40, 474863), (149, 127480), (298, 63740), (596, 31870), (745, 25496), (1192, 15935), (1490, 12748), (2980, 6374), (3187, 5960)]