217553607

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{157991}}^1$

素因数の和:158020

約数の個数: 20

約数和(自身を含む): 344106576

約数和(自身を除く): 126552969

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 157991, 473973, 1421919, 2685847, 4265757, 8057541, 12797271, 24172623, 72517869, 217553607]

約数ペア:

[(1, 217553607), (3, 72517869), (9, 24172623), (17, 12797271), (27, 8057541), (51, 4265757), (81, 2685847), (153, 1421919), (459, 473973), (1377, 157991)]