19980538

素因数分解:

$2^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1\times {\mathrm{1279}}^1$

素因数の和:1461

約数の個数: 16

約数和(自身を含む): 30689280

約数和(自身を除く): 10708742

約数列:

[1, 2, 73, 107, 146, 214, 1279, 2558, 7811, 15622, 93367, 136853, 186734, 273706, 9990269, 19980538]

約数ペア:

[(1, 19980538), (2, 9990269), (73, 273706), (107, 186734), (146, 136853), (214, 93367), (1279, 15622), (2558, 7811)]