138768208

素因数分解:

$2^4\times {\mathrm{431}}^1\times {\mathrm{20123}}^1$

素因数の和:20562

約数の個数: 20

約数和(自身を含む): 269500608

約数和(自身を除く): 130732400

約数列:

[1, 2, 4, 8, 16, 431, 862, 1724, 3448, 6896, 20123, 40246, 80492, 160984, 321968, 8673013, 17346026, 34692052, 69384104, 138768208]

約数ペア:

[(1, 138768208), (2, 69384104), (4, 34692052), (8, 17346026), (16, 8673013), (431, 321968), (862, 160984), (1724, 80492), (3448, 40246), (6896, 20123)]