19701561

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{359}}^1\times {\mathrm{1663}}^1$

素因数の和:2036

約数の個数: 16

約数和(自身を含む): 28753920

約数和(自身を除く): 9052359

約数列:

[1, 3, 11, 33, 359, 1077, 1663, 3949, 4989, 11847, 18293, 54879, 597017, 1791051, 6567187, 19701561]

約数ペア:

[(1, 19701561), (3, 6567187), (11, 1791051), (33, 597017), (359, 54879), (1077, 18293), (1663, 11847), (3949, 4989)]