81892304

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{393713}}^1$

素因数の和:393734

約数の個数: 20

約数和(自身を含む): 170871876

約数和(自身を除く): 88979572

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 393713, 787426, 1574852, 3149704, 5118269, 6299408, 10236538, 20473076, 40946152, 81892304]

約数ペア:

[(1, 81892304), (2, 40946152), (4, 20473076), (8, 10236538), (13, 6299408), (16, 5118269), (26, 3149704), (52, 1574852), (104, 787426), (208, 393713)]