20215107

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{977}}^1$

素因数の和:1024

約数の個数: 36

約数和(自身を含む): 33819240

約数和(自身を除く): 13604133

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 121, 171, 209, 363, 627, 977, 1089, 1881, 2299, 2931, 6897, 8793, 10747, 18563, 20691, 32241, 55689, 96723, 118217, 167067, 204193, 354651, 612579, 1063953, 1837737, 2246123, 6738369, 20215107]

約数ペア:

[(1, 20215107), (3, 6738369), (9, 2246123), (11, 1837737), (19, 1063953), (33, 612579), (57, 354651), (99, 204193), (121, 167067), (171, 118217), (209, 96723), (363, 55689), (627, 32241), (977, 20691), (1089, 18563), (1881, 10747), (2299, 8793), (2931, 6897)]