257469513

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{5081}}^1$

素因数の和:5237

約数の個数: 32

約数和(自身を含む): 416317440

約数和(自身を除く): 158847927

約数列:

[1, 3, 7, 19, 21, 57, 127, 133, 381, 399, 889, 2413, 2667, 5081, 7239, 15243, 16891, 35567, 50673, 96539, 106701, 289617, 645287, 675773, 1935861, 2027319, 4517009, 12260453, 13551027, 36781359, 85823171, 257469513]

約数ペア:

[(1, 257469513), (3, 85823171), (7, 36781359), (19, 13551027), (21, 12260453), (57, 4517009), (127, 2027319), (133, 1935861), (381, 675773), (399, 645287), (889, 289617), (2413, 106701), (2667, 96539), (5081, 50673), (7239, 35567), (15243, 16891)]