208494040

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{193}}^1\times {\mathrm{239}}^1$

素因数の和:556

約数の個数: 64

約数和(自身を含む): 477705600

約数和(自身を除く): 269211560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 193, 226, 239, 386, 452, 478, 565, 772, 904, 956, 965, 1130, 1195, 1544, 1912, 1930, 2260, 2390, 3860, 4520, 4780, 7720, 9560, 21809, 27007, 43618, 46127, 54014, 87236, 92254, 108028, 109045, 135035, 174472, 184508, 216056, 218090, 230635, 270070, 369016, 436180, 461270, 540140, 872360, 922540, 1080280, 1845080, 5212351, 10424702, 20849404, 26061755, 41698808, 52123510, 104247020, 208494040]

約数ペア:

[(1, 208494040), (2, 104247020), (4, 52123510), (5, 41698808), (8, 26061755), (10, 20849404), (20, 10424702), (40, 5212351), (113, 1845080), (193, 1080280), (226, 922540), (239, 872360), (386, 540140), (452, 461270), (478, 436180), (565, 369016), (772, 270070), (904, 230635), (956, 218090), (965, 216056), (1130, 184508), (1195, 174472), (1544, 135035), (1912, 109045), (1930, 108028), (2260, 92254), (2390, 87236), (3860, 54014), (4520, 46127), (4780, 43618), (7720, 27007), (9560, 21809)]