19318978

素因数分解:

$2^1\times 7^1\times {\mathrm{691}}^1\times {\mathrm{1997}}^1$

素因数の和:2697

約数の個数: 16

約数和(自身を含む): 33182784

約数和(自身を除く): 13863806

約数列:

[1, 2, 7, 14, 691, 1382, 1997, 3994, 4837, 9674, 13979, 27958, 1379927, 2759854, 9659489, 19318978]

約数ペア:

[(1, 19318978), (2, 9659489), (7, 2759854), (14, 1379927), (691, 27958), (1382, 13979), (1997, 9674), (3994, 4837)]