2016381680

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1\times {\mathrm{1319}}^1$

素因数の和:1626

約数の個数: 80

約数和(自身を含む): 4764070080

約数和(自身を除く): 2747688400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 197, 388, 394, 485, 776, 788, 970, 985, 1319, 1552, 1576, 1940, 1970, 2638, 3152, 3880, 3940, 5276, 6595, 7760, 7880, 10552, 13190, 15760, 19109, 21104, 26380, 38218, 52760, 76436, 95545, 105520, 127943, 152872, 191090, 255886, 259843, 305744, 382180, 511772, 519686, 639715, 764360, 1023544, 1039372, 1279430, 1299215, 1528720, 2047088, 2078744, 2558860, 2598430, 4157488, 5117720, 5196860, 10235440, 10393720, 20787440, 25204771, 50409542, 100819084, 126023855, 201638168, 252047710, 403276336, 504095420, 1008190840, 2016381680]

約数ペア:

[(1, 2016381680), (2, 1008190840), (4, 504095420), (5, 403276336), (8, 252047710), (10, 201638168), (16, 126023855), (20, 100819084), (40, 50409542), (80, 25204771), (97, 20787440), (194, 10393720), (197, 10235440), (388, 5196860), (394, 5117720), (485, 4157488), (776, 2598430), (788, 2558860), (970, 2078744), (985, 2047088), (1319, 1528720), (1552, 1299215), (1576, 1279430), (1940, 1039372), (1970, 1023544), (2638, 764360), (3152, 639715), (3880, 519686), (3940, 511772), (5276, 382180), (6595, 305744), (7760, 259843), (7880, 255886), (10552, 191090), (13190, 152872), (15760, 127943), (19109, 105520), (21104, 95545), (26380, 76436), (38218, 52760)]