257160920

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{33311}}^1$

素因数の和:33515

約数の個数: 32

約数和(自身を含む): 581627520

約数和(自身を除く): 324466600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 3860, 7720, 33311, 66622, 133244, 166555, 266488, 333110, 666220, 1332440, 6429023, 12858046, 25716092, 32145115, 51432184, 64290230, 128580460, 257160920]

約数ペア:

[(1, 257160920), (2, 128580460), (4, 64290230), (5, 51432184), (8, 32145115), (10, 25716092), (20, 12858046), (40, 6429023), (193, 1332440), (386, 666220), (772, 333110), (965, 266488), (1544, 166555), (1930, 133244), (3860, 66622), (7720, 33311)]