20951888

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77029}}^1$

素因数の和:77054

約数の個数: 20

約数和(自身を含む): 42982740

約数和(自身を除く): 22030852

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77029, 154058, 308116, 616232, 1232464, 1309493, 2618986, 5237972, 10475944, 20951888]

約数ペア:

[(1, 20951888), (2, 10475944), (4, 5237972), (8, 2618986), (16, 1309493), (17, 1232464), (34, 616232), (68, 308116), (136, 154058), (272, 77029)]