21761212

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{5557}}^1$

素因数の和:5661

約数の個数: 24

約数和(自身を含む): 42018480

約数和(自身を除く): 20257268

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 5557, 11114, 22228, 61127, 122254, 244508, 494573, 989146, 1978292, 5440303, 10880606, 21761212]

約数ペア:

[(1, 21761212), (2, 10880606), (4, 5440303), (11, 1978292), (22, 989146), (44, 494573), (89, 244508), (178, 122254), (356, 61127), (979, 22228), (1958, 11114), (3916, 5557)]