18528020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1487}}^1$

素因数の和:1592

約数の個数: 48

約数和(自身を含む): 44997120

約数和(自身を除く): 26469100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1246, 1487, 1780, 2492, 2974, 3115, 5948, 6230, 7435, 10409, 12460, 14870, 20818, 29740, 41636, 52045, 104090, 132343, 208180, 264686, 529372, 661715, 926401, 1323430, 1852802, 2646860, 3705604, 4632005, 9264010, 18528020]

約数ペア:

[(1, 18528020), (2, 9264010), (4, 4632005), (5, 3705604), (7, 2646860), (10, 1852802), (14, 1323430), (20, 926401), (28, 661715), (35, 529372), (70, 264686), (89, 208180), (140, 132343), (178, 104090), (356, 52045), (445, 41636), (623, 29740), (890, 20818), (1246, 14870), (1487, 12460), (1780, 10409), (2492, 7435), (2974, 6230), (3115, 5948)]