20943796

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{479}}^1\times {\mathrm{643}}^1$

素因数の和:1143

約数の個数: 24

約数和(自身を含む): 38949120

約数和(自身を除く): 18005324

約数列:

[1, 2, 4, 17, 34, 68, 479, 643, 958, 1286, 1916, 2572, 8143, 10931, 16286, 21862, 32572, 43724, 307997, 615994, 1231988, 5235949, 10471898, 20943796]

約数ペア:

[(1, 20943796), (2, 10471898), (4, 5235949), (17, 1231988), (34, 615994), (68, 307997), (479, 43724), (643, 32572), (958, 21862), (1286, 16286), (1916, 10931), (2572, 8143)]