19720952

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{145007}}^1$

素因数の和:145030

約数の個数: 16

約数和(自身を含む): 39152160

約数和(自身を除く): 19431208

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 145007, 290014, 580028, 1160056, 2465119, 4930238, 9860476, 19720952]

約数ペア:

[(1, 19720952), (2, 9860476), (4, 4930238), (8, 2465119), (17, 1160056), (34, 580028), (68, 290014), (136, 145007)]