20147281

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{37379}}^1$

素因数の和:37404

約数の個数: 12

約数和(自身を含む): 25567920

約数和(自身を除く): 5420639

約数列:

[1, 7, 11, 49, 77, 539, 37379, 261653, 411169, 1831571, 2878183, 20147281]

約数ペア:

[(1, 20147281), (7, 2878183), (11, 1831571), (49, 411169), (77, 261653), (539, 37379)]