208781643

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{2617}}^1$

素因数の和:2787

約数の個数: 32

約数和(自身を含む): 331752960

約数和(自身を除く): 122971317

約数列:

[1, 3, 7, 21, 29, 87, 131, 203, 393, 609, 917, 2617, 2751, 3799, 7851, 11397, 18319, 26593, 54957, 75893, 79779, 227679, 342827, 531251, 1028481, 1593753, 2399789, 7199367, 9941983, 29825949, 69593881, 208781643]

約数ペア:

[(1, 208781643), (3, 69593881), (7, 29825949), (21, 9941983), (29, 7199367), (87, 2399789), (131, 1593753), (203, 1028481), (393, 531251), (609, 342827), (917, 227679), (2617, 79779), (2751, 75893), (3799, 54957), (7851, 26593), (11397, 18319)]