20805220816

素因数分解:

$2^4\times {\mathrm{173}}^1\times {\mathrm{7516337}}^1$

素因数の和:7516518

約数の個数: 20

約数和(自身を含む): 40543127172

約数和(自身を除く): 19737906356

約数列:

[1, 2, 4, 8, 16, 173, 346, 692, 1384, 2768, 7516337, 15032674, 30065348, 60130696, 120261392, 1300326301, 2600652602, 5201305204, 10402610408, 20805220816]

約数ペア:

[(1, 20805220816), (2, 10402610408), (4, 5201305204), (8, 2600652602), (16, 1300326301), (173, 120261392), (346, 60130696), (692, 30065348), (1384, 15032674), (2768, 7516337)]