18728720

素因数分解:

$2^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1213}}^1$

素因数の和:1419

約数の個数: 40

約数和(自身を含む): 43805976

約数和(自身を除く): 25077256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193, 386, 772, 965, 1213, 1544, 1930, 2426, 3088, 3860, 4852, 6065, 7720, 9704, 12130, 15440, 19408, 24260, 48520, 97040, 234109, 468218, 936436, 1170545, 1872872, 2341090, 3745744, 4682180, 9364360, 18728720]

約数ペア:

[(1, 18728720), (2, 9364360), (4, 4682180), (5, 3745744), (8, 2341090), (10, 1872872), (16, 1170545), (20, 936436), (40, 468218), (80, 234109), (193, 97040), (386, 48520), (772, 24260), (965, 19408), (1213, 15440), (1544, 12130), (1930, 9704), (2426, 7720), (3088, 6065), (3860, 4852)]