2820321

素因数分解:

$3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{503}}^1$

素因数の和:605

約数の個数: 24

約数和(自身を含む): 4717440

約数和(自身を除く): 1897119

約数列:

[1, 3, 7, 9, 21, 63, 89, 267, 503, 623, 801, 1509, 1869, 3521, 4527, 5607, 10563, 31689, 44767, 134301, 313369, 402903, 940107, 2820321]

約数ペア:

[(1, 2820321), (3, 940107), (7, 402903), (9, 313369), (21, 134301), (63, 44767), (89, 31689), (267, 10563), (503, 5607), (623, 4527), (801, 3521), (1509, 1869)]