81642880

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11597}}^1$

素因数の和:11627

約数の個数: 64

約数和(自身を含む): 212939280

約数和(自身を除く): 131296400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 3520, 7040, 11597, 23194, 46388, 57985, 92776, 115970, 127567, 185552, 231940, 255134, 371104, 463880, 510268, 637835, 742208, 927760, 1020536, 1275670, 1484416, 1855520, 2041072, 2551340, 3711040, 4082144, 5102680, 7422080, 8164288, 10205360, 16328576, 20410720, 40821440, 81642880]

約数ペア:

[(1, 81642880), (2, 40821440), (4, 20410720), (5, 16328576), (8, 10205360), (10, 8164288), (11, 7422080), (16, 5102680), (20, 4082144), (22, 3711040), (32, 2551340), (40, 2041072), (44, 1855520), (55, 1484416), (64, 1275670), (80, 1020536), (88, 927760), (110, 742208), (128, 637835), (160, 510268), (176, 463880), (220, 371104), (320, 255134), (352, 231940), (440, 185552), (640, 127567), (704, 115970), (880, 92776), (1408, 57985), (1760, 46388), (3520, 23194), (7040, 11597)]