1998200215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{511703}}^1$

素因数の和:511790

約数の個数: 16

約数和(自身を含む): 2652673536

約数和(自身を除く): 654473321

約数列:

[1, 5, 11, 55, 71, 355, 781, 3905, 511703, 2558515, 5628733, 28143665, 36330913, 181654565, 399640043, 1998200215]

約数ペア:

[(1, 1998200215), (5, 399640043), (11, 181654565), (55, 36330913), (71, 28143665), (355, 5628733), (781, 2558515), (3905, 511703)]