18986936

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{541}}^1$

素因数の和:695

約数の個数: 32

約数和(自身を含む): 36877680

約数和(自身を除く): 17890744

約数列:

[1, 2, 4, 8, 41, 82, 107, 164, 214, 328, 428, 541, 856, 1082, 2164, 4328, 4387, 8774, 17548, 22181, 35096, 44362, 57887, 88724, 115774, 177448, 231548, 463096, 2373367, 4746734, 9493468, 18986936]

約数ペア:

[(1, 18986936), (2, 9493468), (4, 4746734), (8, 2373367), (41, 463096), (82, 231548), (107, 177448), (164, 115774), (214, 88724), (328, 57887), (428, 44362), (541, 35096), (856, 22181), (1082, 17548), (2164, 8774), (4328, 4387)]