19856220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1663}}^1$

素因数の和:1874

約数の個数: 48

約数和(自身を含む): 55910400

約数和(自身を除く): 36054180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 199, 398, 597, 796, 995, 1194, 1663, 1990, 2388, 2985, 3326, 3980, 4989, 5970, 6652, 8315, 9978, 11940, 16630, 19956, 24945, 33260, 49890, 99780, 330937, 661874, 992811, 1323748, 1654685, 1985622, 3309370, 3971244, 4964055, 6618740, 9928110, 19856220]

約数ペア:

[(1, 19856220), (2, 9928110), (3, 6618740), (4, 4964055), (5, 3971244), (6, 3309370), (10, 1985622), (12, 1654685), (15, 1323748), (20, 992811), (30, 661874), (60, 330937), (199, 99780), (398, 49890), (597, 33260), (796, 24945), (995, 19956), (1194, 16630), (1663, 11940), (1990, 9978), (2388, 8315), (2985, 6652), (3326, 5970), (3980, 4989)]