257564679903

素因数分解:

$3^4\times {\mathrm{997}}^1\times {\mathrm{3189379}}^1$

素因数の和:3190388

約数の個数: 20

約数和(自身を含む): 385143150040

約数和(自身を除く): 127578470137

約数列:

[1, 3, 9, 27, 81, 997, 2991, 8973, 26919, 80757, 3189379, 9568137, 28704411, 86113233, 258339699, 3179810863, 9539432589, 28618297767, 85854893301, 257564679903]

約数ペア:

[(1, 257564679903), (3, 85854893301), (9, 28618297767), (27, 9539432589), (81, 3179810863), (997, 258339699), (2991, 86113233), (8973, 28704411), (26919, 9568137), (80757, 3189379)]