25891281

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{613}}^1$

素因数の和:670

約数の個数: 36

約数和(自身を含む): 42575988

約数和(自身を除く): 16684707

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 361, 613, 741, 1083, 1839, 2223, 3249, 4693, 5517, 7969, 11647, 14079, 23907, 34941, 42237, 71721, 104823, 151411, 221293, 454233, 663879, 1362699, 1991637, 2876809, 8630427, 25891281]

約数ペア:

[(1, 25891281), (3, 8630427), (9, 2876809), (13, 1991637), (19, 1362699), (39, 663879), (57, 454233), (117, 221293), (171, 151411), (247, 104823), (361, 71721), (613, 42237), (741, 34941), (1083, 23907), (1839, 14079), (2223, 11647), (3249, 7969), (4693, 5517)]