18811280

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5003}}^1$

素因数の和:5063

約数の個数: 40

約数和(自身を含む): 44675712

約数和(自身を除く): 25864432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5003, 10006, 20012, 25015, 40024, 50030, 80048, 100060, 200120, 235141, 400240, 470282, 940564, 1175705, 1881128, 2351410, 3762256, 4702820, 9405640, 18811280]

約数ペア:

[(1, 18811280), (2, 9405640), (4, 4702820), (5, 3762256), (8, 2351410), (10, 1881128), (16, 1175705), (20, 940564), (40, 470282), (47, 400240), (80, 235141), (94, 200120), (188, 100060), (235, 80048), (376, 50030), (470, 40024), (752, 25015), (940, 20012), (1880, 10006), (3760, 5003)]