18991478

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{18367}}^1$

素因数の和:18427

約数の個数: 16

約数和(自身を含む): 31739904

約数和(自身を除く): 12748426

約数列:

[1, 2, 11, 22, 47, 94, 517, 1034, 18367, 36734, 202037, 404074, 863249, 1726498, 9495739, 18991478]

約数ペア:

[(1, 18991478), (2, 9495739), (11, 1726498), (22, 863249), (47, 404074), (94, 202037), (517, 36734), (1034, 18367)]