51912021

素因数分解:

$3^1\times 7^4\times {\mathrm{7207}}^1$

素因数の和:7238

約数の個数: 20

約数和(自身を含む): 80758432

約数和(自身を除く): 28846411

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 7207, 21621, 50449, 151347, 353143, 1059429, 2472001, 7416003, 17304007, 51912021]

約数ペア:

[(1, 51912021), (3, 17304007), (7, 7416003), (21, 2472001), (49, 1059429), (147, 353143), (343, 151347), (1029, 50449), (2401, 21621), (7203, 7207)]