2181212

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{557}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 4218480

約数和(自身を除く): 2037268

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 557, 979, 1114, 1958, 2228, 3916, 6127, 12254, 24508, 49573, 99146, 198292, 545303, 1090606, 2181212]

約数ペア:

[(1, 2181212), (2, 1090606), (4, 545303), (11, 198292), (22, 99146), (44, 49573), (89, 24508), (178, 12254), (356, 6127), (557, 3916), (979, 2228), (1114, 1958)]