20815912

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{200153}}^1$

素因数の和:200172

約数の個数: 16

約数和(自身を含む): 42032340

約数和(自身を除く): 21216428

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 200153, 400306, 800612, 1601224, 2601989, 5203978, 10407956, 20815912]

約数ペア:

[(1, 20815912), (2, 10407956), (4, 5203978), (8, 2601989), (13, 1601224), (26, 800612), (52, 400306), (104, 200153)]