851720

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 1944000

約数和(自身を除く): 1092280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 199, 214, 398, 428, 535, 796, 856, 995, 1070, 1592, 1990, 2140, 3980, 4280, 7960, 21293, 42586, 85172, 106465, 170344, 212930, 425860, 851720]

約数ペア:

[(1, 851720), (2, 425860), (4, 212930), (5, 170344), (8, 106465), (10, 85172), (20, 42586), (40, 21293), (107, 7960), (199, 4280), (214, 3980), (398, 2140), (428, 1990), (535, 1592), (796, 1070), (856, 995)]