20728542891

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{132689}}^1$

素因数の和:132915

約数の個数: 32

約数和(自身を含む): 32507988480

約数和(自身を除く): 11779445589

約数列:

[1, 3, 7, 21, 43, 129, 173, 301, 519, 903, 1211, 3633, 7439, 22317, 52073, 132689, 156219, 398067, 928823, 2786469, 5705627, 17116881, 22955197, 39939389, 68865591, 119818167, 160686379, 482059137, 987073471, 2961220413, 6909514297, 20728542891]

約数ペア:

[(1, 20728542891), (3, 6909514297), (7, 2961220413), (21, 987073471), (43, 482059137), (129, 160686379), (173, 119818167), (301, 68865591), (519, 39939389), (903, 22955197), (1211, 17116881), (3633, 5705627), (7439, 2786469), (22317, 928823), (52073, 398067), (132689, 156219)]