20918579

素因数分解:

${\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{499}}^1$

素因数の和:650

約数の個数: 16

約数和(自身を含む): 23712000

約数和(自身を除く): 2793421

約数列:

[1, 11, 37, 103, 407, 499, 1133, 3811, 5489, 18463, 41921, 51397, 203093, 565367, 1901689, 20918579]

約数ペア:

[(1, 20918579), (11, 1901689), (37, 565367), (103, 203093), (407, 51397), (499, 41921), (1133, 18463), (3811, 5489)]