278305480

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{34963}}^1$

素因数の和:35173

約数の個数: 32

約数和(自身を含む): 629352000

約数和(自身を除く): 351046520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 34963, 69926, 139852, 174815, 279704, 349630, 699260, 1398520, 6957637, 13915274, 27830548, 34788185, 55661096, 69576370, 139152740, 278305480]

約数ペア:

[(1, 278305480), (2, 139152740), (4, 69576370), (5, 55661096), (8, 34788185), (10, 27830548), (20, 13915274), (40, 6957637), (199, 1398520), (398, 699260), (796, 349630), (995, 279704), (1592, 174815), (1990, 139852), (3980, 69926), (7960, 34963)]