7978743

素因数分解:

$3^4\times {\mathrm{137}}^1\times {\mathrm{719}}^1$

素因数の和:868

約数の個数: 20

約数和(自身を含む): 12022560

約数和(自身を除く): 4043817

約数列:

[1, 3, 9, 27, 81, 137, 411, 719, 1233, 2157, 3699, 6471, 11097, 19413, 58239, 98503, 295509, 886527, 2659581, 7978743]

約数ペア:

[(1, 7978743), (3, 2659581), (9, 886527), (27, 295509), (81, 98503), (137, 58239), (411, 19413), (719, 11097), (1233, 6471), (2157, 3699)]