51457328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{247391}}^1$

素因数の和:247412

約数の個数: 20

約数和(自身を含む): 107368128

約数和(自身を除く): 55910800

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 247391, 494782, 989564, 1979128, 3216083, 3958256, 6432166, 12864332, 25728664, 51457328]

約数ペア:

[(1, 51457328), (2, 25728664), (4, 12864332), (8, 6432166), (13, 3958256), (16, 3216083), (26, 1979128), (52, 989564), (104, 494782), (208, 247391)]