20971912

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{201653}}^1$

素因数の和:201672

約数の個数: 16

約数和(自身を含む): 42347340

約数和(自身を除く): 21375428

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 201653, 403306, 806612, 1613224, 2621489, 5242978, 10485956, 20971912]

約数ペア:

[(1, 20971912), (2, 10485956), (4, 5242978), (8, 2621489), (13, 1613224), (26, 806612), (52, 403306), (104, 201653)]