221411905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{309667}}^1$

素因数の和:309696

約数の個数: 16

約数和(自身を含む): 312145344

約数和(自身を除く): 90733439

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 309667, 1548335, 3406337, 4025671, 17031685, 20128355, 44282381, 221411905]

約数ペア:

[(1, 221411905), (5, 44282381), (11, 20128355), (13, 17031685), (55, 4025671), (65, 3406337), (143, 1548335), (715, 309667)]