19979674

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{69859}}^1$

素因数の和:69885

約数の個数: 16

約数和(自身を含む): 35209440

約数和(自身を除く): 15229766

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 69859, 139718, 768449, 908167, 1536898, 1816334, 9989837, 19979674]

約数ペア:

[(1, 19979674), (2, 9989837), (11, 1816334), (13, 1536898), (22, 908167), (26, 768449), (143, 139718), (286, 69859)]