20987150864

素因数分解:

$2^4\times {\mathrm{631}}^1\times {\mathrm{2078759}}^1$

素因数の和:2079398

約数の個数: 20

約数和(自身を含む): 40727065920

約数和(自身を除く): 19739915056

約数列:

[1, 2, 4, 8, 16, 631, 1262, 2524, 5048, 10096, 2078759, 4157518, 8315036, 16630072, 33260144, 1311696929, 2623393858, 5246787716, 10493575432, 20987150864]

約数ペア:

[(1, 20987150864), (2, 10493575432), (4, 5246787716), (8, 2623393858), (16, 1311696929), (631, 33260144), (1262, 16630072), (2524, 8315036), (5048, 4157518), (10096, 2078759)]