1220660560

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{311393}}^1$

素因数の和:311420

約数の個数: 60

約数和(自身を含む): 3301399188

約数和(自身を除く): 2080738628

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 311393, 622786, 1245572, 1556965, 2179751, 2491144, 3113930, 4359502, 4982288, 6227860, 8719004, 10898755, 12455720, 15258257, 17438008, 21797510, 24911440, 30516514, 34876016, 43595020, 61033028, 76291285, 87190040, 122066056, 152582570, 174380080, 244132112, 305165140, 610330280, 1220660560]

約数ペア:

[(1, 1220660560), (2, 610330280), (4, 305165140), (5, 244132112), (7, 174380080), (8, 152582570), (10, 122066056), (14, 87190040), (16, 76291285), (20, 61033028), (28, 43595020), (35, 34876016), (40, 30516514), (49, 24911440), (56, 21797510), (70, 17438008), (80, 15258257), (98, 12455720), (112, 10898755), (140, 8719004), (196, 6227860), (245, 4982288), (280, 4359502), (392, 3113930), (490, 2491144), (560, 2179751), (784, 1556965), (980, 1245572), (1960, 622786), (3920, 311393)]