257360719

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{4091}}^1$

素因数の和:4171

約数の個数: 32

約数和(自身を含む): 345692160

約数和(自身を除く): 88331441

約数列:

[1, 7, 11, 19, 43, 77, 133, 209, 301, 473, 817, 1463, 3311, 4091, 5719, 8987, 28637, 45001, 62909, 77729, 175913, 315007, 544103, 855019, 1231391, 1935043, 3342347, 5985133, 13545301, 23396429, 36765817, 257360719]

約数ペア:

[(1, 257360719), (7, 36765817), (11, 23396429), (19, 13545301), (43, 5985133), (77, 3342347), (133, 1935043), (209, 1231391), (301, 855019), (473, 544103), (817, 315007), (1463, 175913), (3311, 77729), (4091, 62909), (5719, 45001), (8987, 28637)]