19878298

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{21013}}^1$

素因数の和:21069

約数の個数: 16

約数和(自身を含む): 33286176

約数和(自身を除く): 13407878

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 21013, 42026, 231143, 462286, 903559, 1807118, 9939149, 19878298]

約数ペア:

[(1, 19878298), (2, 9939149), (11, 1807118), (22, 903559), (43, 462286), (86, 231143), (473, 42026), (946, 21013)]