16781648

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{80681}}^1$

素因数の和:80702

約数の個数: 20

約数和(自身を含む): 35015988

約数和(自身を除く): 18234340

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 80681, 161362, 322724, 645448, 1048853, 1290896, 2097706, 4195412, 8390824, 16781648]

約数ペア:

[(1, 16781648), (2, 8390824), (4, 4195412), (8, 2097706), (13, 1290896), (16, 1048853), (26, 645448), (52, 322724), (104, 161362), (208, 80681)]