20406544

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{11701}}^1$

素因数の和:11818

約数の個数: 20

約数和(自身を含む): 39903820

約数和(自身を除く): 19497276

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 11701, 23402, 46804, 93608, 187216, 1275409, 2550818, 5101636, 10203272, 20406544]

約数ペア:

[(1, 20406544), (2, 10203272), (4, 5101636), (8, 2550818), (16, 1275409), (109, 187216), (218, 93608), (436, 46804), (872, 23402), (1744, 11701)]