20761188

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{563}}^1$

素因数の和:1016

約数の個数: 48

約数和(自身を含む): 55587840

約数和(自身を除く): 34826652

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 439, 563, 878, 1126, 1317, 1689, 1756, 2252, 2634, 3073, 3378, 3941, 5268, 6146, 6756, 7882, 9219, 11823, 12292, 15764, 18438, 23646, 36876, 47292, 247157, 494314, 741471, 988628, 1482942, 1730099, 2965884, 3460198, 5190297, 6920396, 10380594, 20761188]

約数ペア:

[(1, 20761188), (2, 10380594), (3, 6920396), (4, 5190297), (6, 3460198), (7, 2965884), (12, 1730099), (14, 1482942), (21, 988628), (28, 741471), (42, 494314), (84, 247157), (439, 47292), (563, 36876), (878, 23646), (1126, 18438), (1317, 15764), (1689, 12292), (1756, 11823), (2252, 9219), (2634, 7882), (3073, 6756), (3378, 6146), (3941, 5268)]