21345028

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{193}}^1\times {\mathrm{643}}^1$

素因数の和:883

約数の個数: 24

約数和(自身を含む): 38480288

約数和(自身を除く): 17135260

約数列:

[1, 2, 4, 43, 86, 172, 193, 386, 643, 772, 1286, 2572, 8299, 16598, 27649, 33196, 55298, 110596, 124099, 248198, 496396, 5336257, 10672514, 21345028]

約数ペア:

[(1, 21345028), (2, 10672514), (4, 5336257), (43, 496396), (86, 248198), (172, 124099), (193, 110596), (386, 55298), (643, 33196), (772, 27649), (1286, 16598), (2572, 8299)]