21241600

素因数分解:

$2^8\times 5^2\times {\mathrm{3319}}^1$

素因数の和:3345

約数の個数: 54

約数和(自身を含む): 52592120

約数和(自身を除く): 31350520

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, 3319, 6400, 6638, 13276, 16595, 26552, 33190, 53104, 66380, 82975, 106208, 132760, 165950, 212416, 265520, 331900, 424832, 531040, 663800, 849664, 1062080, 1327600, 2124160, 2655200, 4248320, 5310400, 10620800, 21241600]

約数ペア:

[(1, 21241600), (2, 10620800), (4, 5310400), (5, 4248320), (8, 2655200), (10, 2124160), (16, 1327600), (20, 1062080), (25, 849664), (32, 663800), (40, 531040), (50, 424832), (64, 331900), (80, 265520), (100, 212416), (128, 165950), (160, 132760), (200, 106208), (256, 82975), (320, 66380), (400, 53104), (640, 33190), (800, 26552), (1280, 16595), (1600, 13276), (3200, 6638), (3319, 6400)]