20841255

素因数分解:

$3^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1709}}^1$

素因数の和:1991

約数の個数: 24

約数和(自身を含む): 36279360

約数和(自身を除く): 15438105

約数列:

[1, 3, 5, 9, 15, 45, 271, 813, 1355, 1709, 2439, 4065, 5127, 8545, 12195, 15381, 25635, 76905, 463139, 1389417, 2315695, 4168251, 6947085, 20841255]

約数ペア:

[(1, 20841255), (3, 6947085), (5, 4168251), (9, 2315695), (15, 1389417), (45, 463139), (271, 76905), (813, 25635), (1355, 15381), (1709, 12195), (2439, 8545), (4065, 5127)]