21959912

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{211153}}^1$

素因数の和:211172

約数の個数: 16

約数和(自身を含む): 44342340

約数和(自身を除く): 22382428

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 211153, 422306, 844612, 1689224, 2744989, 5489978, 10979956, 21959912]

約数ペア:

[(1, 21959912), (2, 10979956), (4, 5489978), (8, 2744989), (13, 1689224), (26, 844612), (52, 422306), (104, 211153)]