21000691746

素因数分解:

$2^1\times 3^3\times {\mathrm{388901699}}^1$

素因数の和:388901710

約数の個数: 16

約数和(自身を含む): 46668204000

約数和(自身を除く): 25667512254

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 388901699, 777803398, 1166705097, 2333410194, 3500115291, 7000230582, 10500345873, 21000691746]

約数ペア:

[(1, 21000691746), (2, 10500345873), (3, 7000230582), (6, 3500115291), (9, 2333410194), (18, 1166705097), (27, 777803398), (54, 388901699)]