208990145

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{65617}}^1$

素因数の和:65649

約数の個数: 24

約数和(自身を含む): 314178984

約数和(自身を除く): 105188839

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 65617, 328085, 459319, 853021, 2296595, 3215233, 4265105, 5971147, 16076165, 29855735, 41798029, 208990145]

約数ペア:

[(1, 208990145), (5, 41798029), (7, 29855735), (13, 16076165), (35, 5971147), (49, 4265105), (65, 3215233), (91, 2296595), (245, 853021), (455, 459319), (637, 328085), (3185, 65617)]