28131680

素因数分解:

$2^5\times 5^1\times {\mathrm{193}}^1\times {\mathrm{911}}^1$

素因数の和:1119

約数の個数: 48

約数和(自身を含む): 66878784

約数和(自身を除く): 38747104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 193, 386, 772, 911, 965, 1544, 1822, 1930, 3088, 3644, 3860, 4555, 6176, 7288, 7720, 9110, 14576, 15440, 18220, 29152, 30880, 36440, 72880, 145760, 175823, 351646, 703292, 879115, 1406584, 1758230, 2813168, 3516460, 5626336, 7032920, 14065840, 28131680]

約数ペア:

[(1, 28131680), (2, 14065840), (4, 7032920), (5, 5626336), (8, 3516460), (10, 2813168), (16, 1758230), (20, 1406584), (32, 879115), (40, 703292), (80, 351646), (160, 175823), (193, 145760), (386, 72880), (772, 36440), (911, 30880), (965, 29152), (1544, 18220), (1822, 15440), (1930, 14576), (3088, 9110), (3644, 7720), (3860, 7288), (4555, 6176)]