81500720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1223}}^1$

素因数の和:1267

約数の個数: 120

約数和(自身を含む): 233583264

約数和(自身を除く): 152082544

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 49, 56, 68, 70, 80, 85, 98, 112, 119, 136, 140, 170, 196, 238, 245, 272, 280, 340, 392, 476, 490, 560, 595, 680, 784, 833, 952, 980, 1190, 1223, 1360, 1666, 1904, 1960, 2380, 2446, 3332, 3920, 4165, 4760, 4892, 6115, 6664, 8330, 8561, 9520, 9784, 12230, 13328, 16660, 17122, 19568, 20791, 24460, 33320, 34244, 41582, 42805, 48920, 59927, 66640, 68488, 83164, 85610, 97840, 103955, 119854, 136976, 145537, 166328, 171220, 207910, 239708, 291074, 299635, 332656, 342440, 415820, 479416, 582148, 599270, 684880, 727685, 831640, 958832, 1018759, 1164296, 1198540, 1455370, 1663280, 2037518, 2328592, 2397080, 2910740, 4075036, 4794160, 5093795, 5821480, 8150072, 10187590, 11642960, 16300144, 20375180, 40750360, 81500720]

約数ペア:

[(1, 81500720), (2, 40750360), (4, 20375180), (5, 16300144), (7, 11642960), (8, 10187590), (10, 8150072), (14, 5821480), (16, 5093795), (17, 4794160), (20, 4075036), (28, 2910740), (34, 2397080), (35, 2328592), (40, 2037518), (49, 1663280), (56, 1455370), (68, 1198540), (70, 1164296), (80, 1018759), (85, 958832), (98, 831640), (112, 727685), (119, 684880), (136, 599270), (140, 582148), (170, 479416), (196, 415820), (238, 342440), (245, 332656), (272, 299635), (280, 291074), (340, 239708), (392, 207910), (476, 171220), (490, 166328), (560, 145537), (595, 136976), (680, 119854), (784, 103955), (833, 97840), (952, 85610), (980, 83164), (1190, 68488), (1223, 66640), (1360, 59927), (1666, 48920), (1904, 42805), (1960, 41582), (2380, 34244), (2446, 33320), (3332, 24460), (3920, 20791), (4165, 19568), (4760, 17122), (4892, 16660), (6115, 13328), (6664, 12230), (8330, 9784), (8561, 9520)]