20979704

素因数分解:

$2^3\times {\mathrm{107}}^1\times {\mathrm{24509}}^1$

素因数の和:24622

約数の個数: 16

約数和(自身を含む): 39706200

約数和(自身を除く): 18726496

約数列:

[1, 2, 4, 8, 107, 214, 428, 856, 24509, 49018, 98036, 196072, 2622463, 5244926, 10489852, 20979704]

約数ペア:

[(1, 20979704), (2, 10489852), (4, 5244926), (8, 2622463), (107, 196072), (214, 98036), (428, 49018), (856, 24509)]