257665239

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{1409}}^1$

素因数の和:1952

約数の個数: 32

約数和(自身を含む): 412171200

約数和(自身を除く): 154505961

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 521, 1409, 1563, 4227, 4689, 6773, 12681, 14067, 18317, 20319, 38043, 54951, 60957, 164853, 182871, 494559, 734089, 2202267, 6606801, 9543157, 19820403, 28629471, 85888413, 257665239]

約数ペア:

[(1, 257665239), (3, 85888413), (9, 28629471), (13, 19820403), (27, 9543157), (39, 6606801), (117, 2202267), (351, 734089), (521, 494559), (1409, 182871), (1563, 164853), (4227, 60957), (4689, 54951), (6773, 38043), (12681, 20319), (14067, 18317)]