20512692081

素因数分解:

$3^2\times 7^3\times {\mathrm{6644863}}^1$

素因数の和:6644890

約数の個数: 24

約数和(自身を含む): 34553292800

約数和(自身を除く): 14040600719

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 6644863, 19934589, 46514041, 59803767, 139542123, 325598287, 418626369, 976794861, 2279188009, 2930384583, 6837564027, 20512692081]

約数ペア:

[(1, 20512692081), (3, 6837564027), (7, 2930384583), (9, 2279188009), (21, 976794861), (49, 418626369), (63, 325598287), (147, 139542123), (343, 59803767), (441, 46514041), (1029, 19934589), (3087, 6644863)]