19979894

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{7151}}^1$

素因数の和:7291

約数の個数: 16

約数和(自身を含む): 32956416

約数和(自身を除く): 12976522

約数列:

[1, 2, 11, 22, 127, 254, 1397, 2794, 7151, 14302, 78661, 157322, 908177, 1816354, 9989947, 19979894]

約数ペア:

[(1, 19979894), (2, 9989947), (11, 1816354), (22, 908177), (127, 157322), (254, 78661), (1397, 14302), (2794, 7151)]