80972440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1\times {\mathrm{263}}^1$

素因数の和:496

約数の個数: 64

約数和(自身を含む): 188179200

約数和(自身を除く): 107206760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 179, 215, 263, 344, 358, 430, 526, 716, 860, 895, 1052, 1315, 1432, 1720, 1790, 2104, 2630, 3580, 5260, 7160, 7697, 10520, 11309, 15394, 22618, 30788, 38485, 45236, 47077, 56545, 61576, 76970, 90472, 94154, 113090, 153940, 188308, 226180, 235385, 307880, 376616, 452360, 470770, 941540, 1883080, 2024311, 4048622, 8097244, 10121555, 16194488, 20243110, 40486220, 80972440]

約数ペア:

[(1, 80972440), (2, 40486220), (4, 20243110), (5, 16194488), (8, 10121555), (10, 8097244), (20, 4048622), (40, 2024311), (43, 1883080), (86, 941540), (172, 470770), (179, 452360), (215, 376616), (263, 307880), (344, 235385), (358, 226180), (430, 188308), (526, 153940), (716, 113090), (860, 94154), (895, 90472), (1052, 76970), (1315, 61576), (1432, 56545), (1720, 47077), (1790, 45236), (2104, 38485), (2630, 30788), (3580, 22618), (5260, 15394), (7160, 11309), (7697, 10520)]