27784880

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:294

約数の個数: 80

約数和(自身を含む): 68058144

約数和(自身を除く): 40273264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 43, 80, 82, 86, 164, 172, 197, 205, 215, 328, 344, 394, 410, 430, 656, 688, 788, 820, 860, 985, 1576, 1640, 1720, 1763, 1970, 3152, 3280, 3440, 3526, 3940, 7052, 7880, 8077, 8471, 8815, 14104, 15760, 16154, 16942, 17630, 28208, 32308, 33884, 35260, 40385, 42355, 64616, 67768, 70520, 80770, 84710, 129232, 135536, 141040, 161540, 169420, 323080, 338840, 347311, 646160, 677680, 694622, 1389244, 1736555, 2778488, 3473110, 5556976, 6946220, 13892440, 27784880]

約数ペア:

[(1, 27784880), (2, 13892440), (4, 6946220), (5, 5556976), (8, 3473110), (10, 2778488), (16, 1736555), (20, 1389244), (40, 694622), (41, 677680), (43, 646160), (80, 347311), (82, 338840), (86, 323080), (164, 169420), (172, 161540), (197, 141040), (205, 135536), (215, 129232), (328, 84710), (344, 80770), (394, 70520), (410, 67768), (430, 64616), (656, 42355), (688, 40385), (788, 35260), (820, 33884), (860, 32308), (985, 28208), (1576, 17630), (1640, 16942), (1720, 16154), (1763, 15760), (1970, 14104), (3152, 8815), (3280, 8471), (3440, 8077), (3526, 7880), (3940, 7052)]