4278500

素因数分解:

$2^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:261

約数の個数: 48

約数和(自身を含む): 9609600

約数和(自身を除く): 5331100

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 199, 215, 250, 398, 430, 500, 796, 860, 995, 1075, 1990, 2150, 3980, 4300, 4975, 5375, 8557, 9950, 10750, 17114, 19900, 21500, 24875, 34228, 42785, 49750, 85570, 99500, 171140, 213925, 427850, 855700, 1069625, 2139250, 4278500]

約数ペア:

[(1, 4278500), (2, 2139250), (4, 1069625), (5, 855700), (10, 427850), (20, 213925), (25, 171140), (43, 99500), (50, 85570), (86, 49750), (100, 42785), (125, 34228), (172, 24875), (199, 21500), (215, 19900), (250, 17114), (398, 10750), (430, 9950), (500, 8557), (796, 5375), (860, 4975), (995, 4300), (1075, 3980), (1990, 2150)]