257589479

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{617}}^1$

素因数の和:759

約数の個数: 32

約数和(自身を含む): 321953280

約数和(自身を除く): 64363801

約数列:

[1, 7, 19, 43, 73, 133, 301, 511, 617, 817, 1387, 3139, 4319, 5719, 9709, 11723, 21973, 26531, 45041, 59641, 82061, 185717, 315287, 417487, 504089, 855779, 1936763, 3528623, 5990453, 13557341, 36798497, 257589479]

約数ペア:

[(1, 257589479), (7, 36798497), (19, 13557341), (43, 5990453), (73, 3528623), (133, 1936763), (301, 855779), (511, 504089), (617, 417487), (817, 315287), (1387, 185717), (3139, 82061), (4319, 59641), (5719, 45041), (9709, 26531), (11723, 21973)]