19926784

素因数分解:

$2^8\times {\mathrm{77839}}^1$

素因数の和:77855

約数の個数: 18

約数和(自身を含む): 39776240

約数和(自身を除く): 19849456

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 77839, 155678, 311356, 622712, 1245424, 2490848, 4981696, 9963392, 19926784]

約数ペア:

[(1, 19926784), (2, 9963392), (4, 4981696), (8, 2490848), (16, 1245424), (32, 622712), (64, 311356), (128, 155678), (256, 77839)]