18978848

素因数分解:

$2^5\times 7^1\times {\mathrm{193}}^1\times {\mathrm{439}}^1$

素因数の和:649

約数の個数: 48

約数和(自身を含む): 43021440

約数和(自身を除く): 24042592

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 193, 224, 386, 439, 772, 878, 1351, 1544, 1756, 2702, 3073, 3088, 3512, 5404, 6146, 6176, 7024, 10808, 12292, 14048, 21616, 24584, 43232, 49168, 84727, 98336, 169454, 338908, 593089, 677816, 1186178, 1355632, 2372356, 2711264, 4744712, 9489424, 18978848]

約数ペア:

[(1, 18978848), (2, 9489424), (4, 4744712), (7, 2711264), (8, 2372356), (14, 1355632), (16, 1186178), (28, 677816), (32, 593089), (56, 338908), (112, 169454), (193, 98336), (224, 84727), (386, 49168), (439, 43232), (772, 24584), (878, 21616), (1351, 14048), (1544, 12292), (1756, 10808), (2702, 7024), (3073, 6176), (3088, 6146), (3512, 5404)]