18986080

素因数分解:

$2^5\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1109}}^1$

素因数の和:1231

約数の個数: 48

約数和(自身を含む): 45314640

約数和(自身を除く): 26328560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 107, 160, 214, 428, 535, 856, 1070, 1109, 1712, 2140, 2218, 3424, 4280, 4436, 5545, 8560, 8872, 11090, 17120, 17744, 22180, 35488, 44360, 88720, 118663, 177440, 237326, 474652, 593315, 949304, 1186630, 1898608, 2373260, 3797216, 4746520, 9493040, 18986080]

約数ペア:

[(1, 18986080), (2, 9493040), (4, 4746520), (5, 3797216), (8, 2373260), (10, 1898608), (16, 1186630), (20, 949304), (32, 593315), (40, 474652), (80, 237326), (107, 177440), (160, 118663), (214, 88720), (428, 44360), (535, 35488), (856, 22180), (1070, 17744), (1109, 17120), (1712, 11090), (2140, 8872), (2218, 8560), (3424, 5545), (4280, 4436)]