1009911021

素因数分解:

$3^1\times 7^4\times {\mathrm{140207}}^1$

素因数の和:140238

約数の個数: 20

約数和(自身を含む): 1570890432

約数和(自身を除く): 560979411

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 140207, 420621, 981449, 2944347, 6870143, 20610429, 48091001, 144273003, 336637007, 1009911021]

約数ペア:

[(1, 1009911021), (3, 336637007), (7, 144273003), (21, 48091001), (49, 20610429), (147, 6870143), (343, 2944347), (1029, 981449), (2401, 420621), (7203, 140207)]