78181852

素因数分解:

$2^2\times 7^2\times {\mathrm{398887}}^1$

素因数の和:398905

約数の個数: 18

約数和(自身を含む): 159156312

約数和(自身を除く): 80974460

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 398887, 797774, 1595548, 2792209, 5584418, 11168836, 19545463, 39090926, 78181852]

約数ペア:

[(1, 78181852), (2, 39090926), (4, 19545463), (7, 11168836), (14, 5584418), (28, 2792209), (49, 1595548), (98, 797774), (196, 398887)]