21880208

素因数分解:

$2^4\times 7^1\times {\mathrm{195359}}^1$

素因数の和:195374

約数の個数: 20

約数和(自身を含む): 48449280

約数和(自身を除く): 26569072

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 195359, 390718, 781436, 1367513, 1562872, 2735026, 3125744, 5470052, 10940104, 21880208]

約数ペア:

[(1, 21880208), (2, 10940104), (4, 5470052), (7, 3125744), (8, 2735026), (14, 1562872), (16, 1367513), (28, 781436), (56, 390718), (112, 195359)]