21510400

素因数分解:

$2^8\times 5^2\times {\mathrm{3361}}^1$

素因数の和:3387

約数の個数: 54

約数和(自身を含む): 53257442

約数和(自身を除く): 31747042

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 3361, 6400, 6722, 13444, 16805, 26888, 33610, 53776, 67220, 84025, 107552, 134440, 168050, 215104, 268880, 336100, 430208, 537760, 672200, 860416, 1075520, 1344400, 2151040, 2688800, 4302080, 5377600, 10755200, 21510400]

約数ペア:

[(1, 21510400), (2, 10755200), (4, 5377600), (5, 4302080), (8, 2688800), (10, 2151040), (16, 1344400), (20, 1075520), (25, 860416), (32, 672200), (40, 537760), (50, 430208), (64, 336100), (80, 268880), (100, 215104), (128, 168050), (160, 134440), (200, 107552), (256, 84025), (320, 67220), (400, 53776), (640, 33610), (800, 26888), (1280, 16805), (1600, 13444), (3200, 6722), (3361, 6400)]