20687445

素因数分解:

$3^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1709}}^1$

素因数の和:1989

約数の個数: 24

約数和(自身を含む): 36012600

約数和(自身を除く): 15325155

約数列:

[1, 3, 5, 9, 15, 45, 269, 807, 1345, 1709, 2421, 4035, 5127, 8545, 12105, 15381, 25635, 76905, 459721, 1379163, 2298605, 4137489, 6895815, 20687445]

約数ペア:

[(1, 20687445), (3, 6895815), (5, 4137489), (9, 2298605), (15, 1379163), (45, 459721), (269, 76905), (807, 25635), (1345, 15381), (1709, 12105), (2421, 8545), (4035, 5127)]