257656

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:163

約数の個数: 32

約数和(自身を含む): 570240

約数和(自身を除く): 312584

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 86, 107, 172, 214, 301, 344, 428, 602, 749, 856, 1204, 1498, 2408, 2996, 4601, 5992, 9202, 18404, 32207, 36808, 64414, 128828, 257656]

約数ペア:

[(1, 257656), (2, 128828), (4, 64414), (7, 36808), (8, 32207), (14, 18404), (28, 9202), (43, 5992), (56, 4601), (86, 2996), (107, 2408), (172, 1498), (214, 1204), (301, 856), (344, 749), (428, 602)]