20905724

素因数分解:

$2^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{5879}}^1$

素因数の和:6017

約数の個数: 24

約数和(自身を含む): 42147840

約数和(自身を除く): 21242116

約数列:

[1, 2, 4, 7, 14, 28, 127, 254, 508, 889, 1778, 3556, 5879, 11758, 23516, 41153, 82306, 164612, 746633, 1493266, 2986532, 5226431, 10452862, 20905724]

約数ペア:

[(1, 20905724), (2, 10452862), (4, 5226431), (7, 2986532), (14, 1493266), (28, 746633), (127, 164612), (254, 82306), (508, 41153), (889, 23516), (1778, 11758), (3556, 5879)]