81795520

素因数分解:

$2^6\times 5^1\times {\mathrm{443}}^1\times {\mathrm{577}}^1$

素因数の和:1037

約数の個数: 56

約数和(自身を含む): 195553584

約数和(自身を除く): 113758064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 443, 577, 886, 1154, 1772, 2215, 2308, 2885, 3544, 4430, 4616, 5770, 7088, 8860, 9232, 11540, 14176, 17720, 18464, 23080, 28352, 35440, 36928, 46160, 70880, 92320, 141760, 184640, 255611, 511222, 1022444, 1278055, 2044888, 2556110, 4089776, 5112220, 8179552, 10224440, 16359104, 20448880, 40897760, 81795520]

約数ペア:

[(1, 81795520), (2, 40897760), (4, 20448880), (5, 16359104), (8, 10224440), (10, 8179552), (16, 5112220), (20, 4089776), (32, 2556110), (40, 2044888), (64, 1278055), (80, 1022444), (160, 511222), (320, 255611), (443, 184640), (577, 141760), (886, 92320), (1154, 70880), (1772, 46160), (2215, 36928), (2308, 35440), (2885, 28352), (3544, 23080), (4430, 18464), (4616, 17720), (5770, 14176), (7088, 11540), (8860, 9232)]