257745656

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{148471}}^1$

素因数の和:148515

約数の個数: 32

約数和(自身を含む): 570132480

約数和(自身を除く): 312386824

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 434, 868, 1736, 148471, 296942, 593884, 1039297, 1187768, 2078594, 4157188, 4602601, 8314376, 9205202, 18410404, 32218207, 36820808, 64436414, 128872828, 257745656]

約数ペア:

[(1, 257745656), (2, 128872828), (4, 64436414), (7, 36820808), (8, 32218207), (14, 18410404), (28, 9205202), (31, 8314376), (56, 4602601), (62, 4157188), (124, 2078594), (217, 1187768), (248, 1039297), (434, 593884), (868, 296942), (1736, 148471)]