2100000080

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{13679}}^1$

素因数の和:13812

約数の個数: 80

約数和(自身を含む): 5190739200

約数和(自身を除く): 3090739120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 101, 152, 190, 202, 304, 380, 404, 505, 760, 808, 1010, 1520, 1616, 1919, 2020, 3838, 4040, 7676, 8080, 9595, 13679, 15352, 19190, 27358, 30704, 38380, 54716, 68395, 76760, 109432, 136790, 153520, 218864, 259901, 273580, 519802, 547160, 1039604, 1094320, 1299505, 1381579, 2079208, 2599010, 2763158, 4158416, 5198020, 5526316, 6907895, 10396040, 11052632, 13815790, 20792080, 22105264, 26250001, 27631580, 52500002, 55263160, 105000004, 110526320, 131250005, 210000008, 262500010, 420000016, 525000020, 1050000040, 2100000080]

約数ペア:

[(1, 2100000080), (2, 1050000040), (4, 525000020), (5, 420000016), (8, 262500010), (10, 210000008), (16, 131250005), (19, 110526320), (20, 105000004), (38, 55263160), (40, 52500002), (76, 27631580), (80, 26250001), (95, 22105264), (101, 20792080), (152, 13815790), (190, 11052632), (202, 10396040), (304, 6907895), (380, 5526316), (404, 5198020), (505, 4158416), (760, 2763158), (808, 2599010), (1010, 2079208), (1520, 1381579), (1616, 1299505), (1919, 1094320), (2020, 1039604), (3838, 547160), (4040, 519802), (7676, 273580), (8080, 259901), (9595, 218864), (13679, 153520), (15352, 136790), (19190, 109432), (27358, 76760), (30704, 68395), (38380, 54716)]