256280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:203

約数の個数: 32

約数和(自身を含む): 594000

約数和(自身を除く): 337720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 149, 172, 215, 298, 344, 430, 596, 745, 860, 1192, 1490, 1720, 2980, 5960, 6407, 12814, 25628, 32035, 51256, 64070, 128140, 256280]

約数ペア:

[(1, 256280), (2, 128140), (4, 64070), (5, 51256), (8, 32035), (10, 25628), (20, 12814), (40, 6407), (43, 5960), (86, 2980), (149, 1720), (172, 1490), (215, 1192), (298, 860), (344, 745), (430, 596)]