20512488080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{1423}}^1\times {\mathrm{25741}}^1$

素因数の和:27184

約数の個数: 80

約数和(自身を含む): 54545032704

約数和(自身を除く): 34032544624

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 1423, 2846, 5692, 7115, 9961, 11384, 14230, 19922, 22768, 25741, 28460, 39844, 49805, 51482, 56920, 79688, 99610, 102964, 113840, 128705, 159376, 180187, 199220, 205928, 257410, 360374, 398440, 411856, 514820, 720748, 796880, 900935, 1029640, 1441496, 1801870, 2059280, 2882992, 3603740, 7207480, 14414960, 36629443, 73258886, 146517772, 183147215, 256406101, 293035544, 366294430, 512812202, 586071088, 732588860, 1025624404, 1282030505, 1465177720, 2051248808, 2564061010, 2930355440, 4102497616, 5128122020, 10256244040, 20512488080]

約数ペア:

[(1, 20512488080), (2, 10256244040), (4, 5128122020), (5, 4102497616), (7, 2930355440), (8, 2564061010), (10, 2051248808), (14, 1465177720), (16, 1282030505), (20, 1025624404), (28, 732588860), (35, 586071088), (40, 512812202), (56, 366294430), (70, 293035544), (80, 256406101), (112, 183147215), (140, 146517772), (280, 73258886), (560, 36629443), (1423, 14414960), (2846, 7207480), (5692, 3603740), (7115, 2882992), (9961, 2059280), (11384, 1801870), (14230, 1441496), (19922, 1029640), (22768, 900935), (25741, 796880), (28460, 720748), (39844, 514820), (49805, 411856), (51482, 398440), (56920, 360374), (79688, 257410), (99610, 205928), (102964, 199220), (113840, 180187), (128705, 159376)]