28439378

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{12799}}^1$

素因数の和:12913

約数の個数: 16

約数和(自身を含む): 47001600

約数和(自身を除く): 18562222

約数列:

[1, 2, 11, 22, 101, 202, 1111, 2222, 12799, 25598, 140789, 281578, 1292699, 2585398, 14219689, 28439378]

約数ペア:

[(1, 28439378), (2, 14219689), (11, 2585398), (22, 1292699), (101, 281578), (202, 140789), (1111, 25598), (2222, 12799)]