678605121

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{440939}}^1$

素因数の和:440970

約数の個数: 20

約数和(自身を含む): 1067074800

約数和(自身を除く): 388469679

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 440939, 1322817, 3968451, 8377841, 11905353, 25133523, 35716059, 75400569, 226201707, 678605121]

約数ペア:

[(1, 678605121), (3, 226201707), (9, 75400569), (19, 35716059), (27, 25133523), (57, 11905353), (81, 8377841), (171, 3968451), (513, 1322817), (1539, 440939)]