21893920

素因数分解:

$2^5\times 5^1\times {\mathrm{193}}^1\times {\mathrm{709}}^1$

素因数の和:917

約数の個数: 48

約数和(自身を含む): 52065720

約数和(自身を除く): 30171800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 193, 386, 709, 772, 965, 1418, 1544, 1930, 2836, 3088, 3545, 3860, 5672, 6176, 7090, 7720, 11344, 14180, 15440, 22688, 28360, 30880, 56720, 113440, 136837, 273674, 547348, 684185, 1094696, 1368370, 2189392, 2736740, 4378784, 5473480, 10946960, 21893920]

約数ペア:

[(1, 21893920), (2, 10946960), (4, 5473480), (5, 4378784), (8, 2736740), (10, 2189392), (16, 1368370), (20, 1094696), (32, 684185), (40, 547348), (80, 273674), (160, 136837), (193, 113440), (386, 56720), (709, 30880), (772, 28360), (965, 22688), (1418, 15440), (1544, 14180), (1930, 11344), (2836, 7720), (3088, 7090), (3545, 6176), (3860, 5672)]