20837212

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{3407}}^1$

素因数の和:3561

約数の個数: 24

約数和(自身を含む): 40078080

約数和(自身を除く): 19240868

約数列:

[1, 2, 4, 11, 22, 44, 139, 278, 556, 1529, 3058, 3407, 6116, 6814, 13628, 37477, 74954, 149908, 473573, 947146, 1894292, 5209303, 10418606, 20837212]

約数ペア:

[(1, 20837212), (2, 10418606), (4, 5209303), (11, 1894292), (22, 947146), (44, 473573), (139, 149908), (278, 74954), (556, 37477), (1529, 13628), (3058, 6814), (3407, 6116)]