21504496

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103387}}^1$

素因数の和:103408

約数の個数: 20

約数和(自身を含む): 44870392

約数和(自身を除く): 23365896

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103387, 206774, 413548, 827096, 1344031, 1654192, 2688062, 5376124, 10752248, 21504496]

約数ペア:

[(1, 21504496), (2, 10752248), (4, 5376124), (8, 2688062), (13, 1654192), (16, 1344031), (26, 827096), (52, 413548), (104, 206774), (208, 103387)]