1247140720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{499}}^1\times {\mathrm{4463}}^1$

素因数の和:4982

約数の個数: 80

約数和(自身を含む): 3321216000

約数和(自身を除く): 2074075280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 499, 560, 998, 1996, 2495, 3493, 3992, 4463, 4990, 6986, 7984, 8926, 9980, 13972, 17465, 17852, 19960, 22315, 27944, 31241, 34930, 35704, 39920, 44630, 55888, 62482, 69860, 71408, 89260, 124964, 139720, 156205, 178520, 249928, 279440, 312410, 357040, 499856, 624820, 1249640, 2227037, 2499280, 4454074, 8908148, 11135185, 15589259, 17816296, 22270370, 31178518, 35632592, 44540740, 62357036, 77946295, 89081480, 124714072, 155892590, 178162960, 249428144, 311785180, 623570360, 1247140720]

約数ペア:

[(1, 1247140720), (2, 623570360), (4, 311785180), (5, 249428144), (7, 178162960), (8, 155892590), (10, 124714072), (14, 89081480), (16, 77946295), (20, 62357036), (28, 44540740), (35, 35632592), (40, 31178518), (56, 22270370), (70, 17816296), (80, 15589259), (112, 11135185), (140, 8908148), (280, 4454074), (499, 2499280), (560, 2227037), (998, 1249640), (1996, 624820), (2495, 499856), (3493, 357040), (3992, 312410), (4463, 279440), (4990, 249928), (6986, 178520), (7984, 156205), (8926, 139720), (9980, 124964), (13972, 89260), (17465, 71408), (17852, 69860), (19960, 62482), (22315, 55888), (27944, 44630), (31241, 39920), (34930, 35704)]