20425455

素因数分解:

$3^2\times 5^1\times {\mathrm{541}}^1\times {\mathrm{839}}^1$

素因数の和:1391

約数の個数: 24

約数和(自身を含む): 35511840

約数和(自身を除く): 15086385

約数列:

[1, 3, 5, 9, 15, 45, 541, 839, 1623, 2517, 2705, 4195, 4869, 7551, 8115, 12585, 24345, 37755, 453899, 1361697, 2269495, 4085091, 6808485, 20425455]

約数ペア:

[(1, 20425455), (3, 6808485), (5, 4085091), (9, 2269495), (15, 1361697), (45, 453899), (541, 37755), (839, 24345), (1623, 12585), (2517, 8115), (2705, 7551), (4195, 4869)]