19704025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{523}}^1$

素因数の和:681

約数の個数: 24

約数和(自身を含む): 26900064

約数和(自身を除く): 7196039

約数列:

[1, 5, 11, 25, 55, 137, 275, 523, 685, 1507, 2615, 3425, 5753, 7535, 13075, 28765, 37675, 71651, 143825, 358255, 788161, 1791275, 3940805, 19704025]

約数ペア:

[(1, 19704025), (5, 3940805), (11, 1791275), (25, 788161), (55, 358255), (137, 143825), (275, 71651), (523, 37675), (685, 28765), (1507, 13075), (2615, 7535), (3425, 5753)]