81423909

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{1087}}^1$

素因数の和:1170

約数の個数: 48

約数和(自身を含む): 142571520

約数和(自身を除く): 61147611

約数列:

[1, 3, 7, 9, 21, 29, 41, 63, 87, 123, 203, 261, 287, 369, 609, 861, 1087, 1189, 1827, 2583, 3261, 3567, 7609, 8323, 9783, 10701, 22827, 24969, 31523, 44567, 68481, 74907, 94569, 133701, 220661, 283707, 311969, 401103, 661983, 935907, 1292443, 1985949, 2807721, 3877329, 9047101, 11631987, 27141303, 81423909]

約数ペア:

[(1, 81423909), (3, 27141303), (7, 11631987), (9, 9047101), (21, 3877329), (29, 2807721), (41, 1985949), (63, 1292443), (87, 935907), (123, 661983), (203, 401103), (261, 311969), (287, 283707), (369, 220661), (609, 133701), (861, 94569), (1087, 74907), (1189, 68481), (1827, 44567), (2583, 31523), (3261, 24969), (3567, 22827), (7609, 10701), (8323, 9783)]