18890960

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21467}}^1$

素因数の和:21491

約数の個数: 40

約数和(自身を含む): 47916576

約数和(自身を除く): 29025616

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 21467, 42934, 85868, 107335, 171736, 214670, 236137, 343472, 429340, 472274, 858680, 944548, 1180685, 1717360, 1889096, 2361370, 3778192, 4722740, 9445480, 18890960]

約数ペア:

[(1, 18890960), (2, 9445480), (4, 4722740), (5, 3778192), (8, 2361370), (10, 1889096), (11, 1717360), (16, 1180685), (20, 944548), (22, 858680), (40, 472274), (44, 429340), (55, 343472), (80, 236137), (88, 214670), (110, 171736), (176, 107335), (220, 85868), (440, 42934), (880, 21467)]