21755140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{98887}}^1$

素因数の和:98907

約数の個数: 24

約数和(自身を含む): 49839552

約数和(自身を除く): 28084412

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 98887, 197774, 395548, 494435, 988870, 1087757, 1977740, 2175514, 4351028, 5438785, 10877570, 21755140]

約数ペア:

[(1, 21755140), (2, 10877570), (4, 5438785), (5, 4351028), (10, 2175514), (11, 1977740), (20, 1087757), (22, 988870), (44, 494435), (55, 395548), (110, 197774), (220, 98887)]