20648295

素因数分解:

$3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3613}}^1$

素因数の和:3751

約数の個数: 24

約数和(自身を含む): 36082176

約数和(自身を除く): 15433881

約数列:

[1, 3, 5, 9, 15, 45, 127, 381, 635, 1143, 1905, 3613, 5715, 10839, 18065, 32517, 54195, 162585, 458851, 1376553, 2294255, 4129659, 6882765, 20648295]

約数ペア:

[(1, 20648295), (3, 6882765), (5, 4129659), (9, 2294255), (15, 1376553), (45, 458851), (127, 162585), (381, 54195), (635, 32517), (1143, 18065), (1905, 10839), (3613, 5715)]