66081680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{599}}^1$

素因数の和:816

約数の個数: 80

約数和(自身を含む): 176774400

約数和(自身を除く): 110692720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 197, 280, 394, 560, 599, 788, 985, 1198, 1379, 1576, 1970, 2396, 2758, 2995, 3152, 3940, 4193, 4792, 5516, 5990, 6895, 7880, 8386, 9584, 11032, 11980, 13790, 15760, 16772, 20965, 22064, 23960, 27580, 33544, 41930, 47920, 55160, 67088, 83860, 110320, 118003, 167720, 236006, 335440, 472012, 590015, 826021, 944024, 1180030, 1652042, 1888048, 2360060, 3304084, 4130105, 4720120, 6608168, 8260210, 9440240, 13216336, 16520420, 33040840, 66081680]

約数ペア:

[(1, 66081680), (2, 33040840), (4, 16520420), (5, 13216336), (7, 9440240), (8, 8260210), (10, 6608168), (14, 4720120), (16, 4130105), (20, 3304084), (28, 2360060), (35, 1888048), (40, 1652042), (56, 1180030), (70, 944024), (80, 826021), (112, 590015), (140, 472012), (197, 335440), (280, 236006), (394, 167720), (560, 118003), (599, 110320), (788, 83860), (985, 67088), (1198, 55160), (1379, 47920), (1576, 41930), (1970, 33544), (2396, 27580), (2758, 23960), (2995, 22064), (3152, 20965), (3940, 16772), (4193, 15760), (4792, 13790), (5516, 11980), (5990, 11032), (6895, 9584), (7880, 8386)]