258960208

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{1245001}}^1$

素因数の和:1245022

約数の個数: 20

約数和(自身を含む): 540330868

約数和(自身を除く): 281370660

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 1245001, 2490002, 4980004, 9960008, 16185013, 19920016, 32370026, 64740052, 129480104, 258960208]

約数ペア:

[(1, 258960208), (2, 129480104), (4, 64740052), (8, 32370026), (13, 19920016), (16, 16185013), (26, 9960008), (52, 4980004), (104, 2490002), (208, 1245001)]