189997240

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{23869}}^1$

素因数の和:24079

約数の個数: 32

約数和(自身を含む): 429660000

約数和(自身を除く): 239662760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 23869, 47738, 95476, 119345, 190952, 238690, 477380, 954760, 4749931, 9499862, 18999724, 23749655, 37999448, 47499310, 94998620, 189997240]

約数ペア:

[(1, 189997240), (2, 94998620), (4, 47499310), (5, 37999448), (8, 23749655), (10, 18999724), (20, 9499862), (40, 4749931), (199, 954760), (398, 477380), (796, 238690), (995, 190952), (1592, 119345), (1990, 95476), (3980, 47738), (7960, 23869)]