78281217

素因数分解:

$3^2\times 7^1\times {\mathrm{839}}^1\times {\mathrm{1481}}^1$

素因数の和:2333

約数の個数: 24

約数和(自身を含む): 129467520

約数和(自身を除く): 51186303

約数列:

[1, 3, 7, 9, 21, 63, 839, 1481, 2517, 4443, 5873, 7551, 10367, 13329, 17619, 31101, 52857, 93303, 1242559, 3727677, 8697913, 11183031, 26093739, 78281217]

約数ペア:

[(1, 78281217), (3, 26093739), (7, 11183031), (9, 8697913), (21, 3727677), (63, 1242559), (839, 93303), (1481, 52857), (2517, 31101), (4443, 17619), (5873, 13329), (7551, 10367)]