20640636

素因数分解:

$2^2\times 3^3\times {\mathrm{383}}^1\times {\mathrm{499}}^1$

素因数の和:895

約数の個数: 48

約数和(自身を含む): 53760000

約数和(自身を除く): 33119364

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 383, 499, 766, 998, 1149, 1497, 1532, 1996, 2298, 2994, 3447, 4491, 4596, 5988, 6894, 8982, 10341, 13473, 13788, 17964, 20682, 26946, 41364, 53892, 191117, 382234, 573351, 764468, 1146702, 1720053, 2293404, 3440106, 5160159, 6880212, 10320318, 20640636]

約数ペア:

[(1, 20640636), (2, 10320318), (3, 6880212), (4, 5160159), (6, 3440106), (9, 2293404), (12, 1720053), (18, 1146702), (27, 764468), (36, 573351), (54, 382234), (108, 191117), (383, 53892), (499, 41364), (766, 26946), (998, 20682), (1149, 17964), (1497, 13788), (1532, 13473), (1996, 10341), (2298, 8982), (2994, 6894), (3447, 5988), (4491, 4596)]