209215643

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{328439}}^1$

素因数の和:328466

約数の個数: 12

約数和(自身を含む): 262095120

約数和(自身を除く): 52879477

約数列:

[1, 7, 13, 49, 91, 637, 328439, 2299073, 4269707, 16093511, 29887949, 209215643]

約数ペア:

[(1, 209215643), (7, 29887949), (13, 16093511), (49, 4269707), (91, 2299073), (637, 328439)]