777787143

素因数分解:

$3^1\times 7^4\times {\mathrm{107981}}^1$

素因数の和:108012

約数の個数: 20

約数和(自身を含む): 1209830328

約数和(自身を除く): 432043185

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 107981, 323943, 755867, 2267601, 5291069, 15873207, 37037483, 111112449, 259262381, 777787143]

約数ペア:

[(1, 777787143), (3, 259262381), (7, 111112449), (21, 37037483), (49, 15873207), (147, 5291069), (343, 2267601), (1029, 755867), (2401, 323943), (7203, 107981)]