1990757960

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{363277}}^1$

素因数の和:363425

約数の個数: 32

約数和(自身を含む): 4511912760

約数和(自身を除く): 2521154800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 5480, 363277, 726554, 1453108, 1816385, 2906216, 3632770, 7265540, 14531080, 49768949, 99537898, 199075796, 248844745, 398151592, 497689490, 995378980, 1990757960]

約数ペア:

[(1, 1990757960), (2, 995378980), (4, 497689490), (5, 398151592), (8, 248844745), (10, 199075796), (20, 99537898), (40, 49768949), (137, 14531080), (274, 7265540), (548, 3632770), (685, 2906216), (1096, 1816385), (1370, 1453108), (2740, 726554), (5480, 363277)]