20697964

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{17191}}^1$

素因数の和:17245

約数の個数: 24

約数和(自身を含む): 42361088

約数和(自身を除く): 21663124

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 17191, 34382, 68764, 120337, 240674, 481348, 739213, 1478426, 2956852, 5174491, 10348982, 20697964]

約数ペア:

[(1, 20697964), (2, 10348982), (4, 5174491), (7, 2956852), (14, 1478426), (28, 739213), (43, 481348), (86, 240674), (172, 120337), (301, 68764), (602, 34382), (1204, 17191)]