28138448

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{135281}}^1$

素因数の和:135302

約数の個数: 20

約数和(自身を含む): 58712388

約数和(自身を除く): 30573940

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 135281, 270562, 541124, 1082248, 1758653, 2164496, 3517306, 7034612, 14069224, 28138448]

約数ペア:

[(1, 28138448), (2, 14069224), (4, 7034612), (8, 3517306), (13, 2164496), (16, 1758653), (26, 1082248), (52, 541124), (104, 270562), (208, 135281)]