20697784

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{63103}}^1$

素因数の和:63150

約数の個数: 16

約数和(自身を含む): 39755520

約数和(自身を除く): 19057736

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 63103, 126206, 252412, 504824, 2587223, 5174446, 10348892, 20697784]

約数ペア:

[(1, 20697784), (2, 10348892), (4, 5174446), (8, 2587223), (41, 504824), (82, 252412), (164, 126206), (328, 63103)]