20200345

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{173}}^1\times {\mathrm{193}}^1$

素因数の和:393

約数の個数: 24

約数和(自身を含む): 26937288

約数和(自身を除く): 6736943

約数列:

[1, 5, 11, 55, 121, 173, 193, 605, 865, 965, 1903, 2123, 9515, 10615, 20933, 23353, 33389, 104665, 116765, 166945, 367279, 1836395, 4040069, 20200345]

約数ペア:

[(1, 20200345), (5, 4040069), (11, 1836395), (55, 367279), (121, 166945), (173, 116765), (193, 104665), (605, 33389), (865, 23353), (965, 20933), (1903, 10615), (2123, 9515)]