20738740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{881}}^1$

素因数の和:1008

約数の個数: 48

約数和(自身を含む): 48009024

約数和(自身を除く): 27270284

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 107, 110, 214, 220, 428, 535, 881, 1070, 1177, 1762, 2140, 2354, 3524, 4405, 4708, 5885, 8810, 9691, 11770, 17620, 19382, 23540, 38764, 48455, 94267, 96910, 188534, 193820, 377068, 471335, 942670, 1036937, 1885340, 2073874, 4147748, 5184685, 10369370, 20738740]

約数ペア:

[(1, 20738740), (2, 10369370), (4, 5184685), (5, 4147748), (10, 2073874), (11, 1885340), (20, 1036937), (22, 942670), (44, 471335), (55, 377068), (107, 193820), (110, 188534), (214, 96910), (220, 94267), (428, 48455), (535, 38764), (881, 23540), (1070, 19382), (1177, 17620), (1762, 11770), (2140, 9691), (2354, 8810), (3524, 5885), (4405, 4708)]