20819853

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{4373}}^1$

素因数の和:4425

約数の個数: 18

約数和(自身を含む): 31444686

約数和(自身を除く): 10624833

約数列:

[1, 3, 9, 23, 69, 207, 529, 1587, 4373, 4761, 13119, 39357, 100579, 301737, 905211, 2313317, 6939951, 20819853]

約数ペア:

[(1, 20819853), (3, 6939951), (9, 2313317), (23, 905211), (69, 301737), (207, 100579), (529, 39357), (1587, 13119), (4373, 4761)]