20777859

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{977}}^1$

素因数の和:1139

約数の個数: 24

約数和(自身を含む): 32039280

約数和(自身を除く): 11261421

約数列:

[1, 3, 9, 17, 51, 139, 153, 417, 977, 1251, 2363, 2931, 7089, 8793, 16609, 21267, 49827, 135803, 149481, 407409, 1222227, 2308651, 6925953, 20777859]

約数ペア:

[(1, 20777859), (3, 6925953), (9, 2308651), (17, 1222227), (51, 407409), (139, 149481), (153, 135803), (417, 49827), (977, 21267), (1251, 16609), (2363, 8793), (2931, 7089)]