261378

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{1117}}^1$

素因数の和:1138

約数の個数: 24

約数和(自身を含む): 610428

約数和(自身を除く): 349050

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 1117, 2234, 3351, 6702, 10053, 14521, 20106, 29042, 43563, 87126, 130689, 261378]

約数ペア:

[(1, 261378), (2, 130689), (3, 87126), (6, 43563), (9, 29042), (13, 20106), (18, 14521), (26, 10053), (39, 6702), (78, 3351), (117, 2234), (234, 1117)]