19990442

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1\times {\mathrm{1217}}^1$

素因数の和:1453

約数の個数: 16

約数和(自身を含む): 30868992

約数和(自身を除く): 10878550

約数列:

[1, 2, 43, 86, 191, 382, 1217, 2434, 8213, 16426, 52331, 104662, 232447, 464894, 9995221, 19990442]

約数ペア:

[(1, 19990442), (2, 9995221), (43, 464894), (86, 232447), (191, 104662), (382, 52331), (1217, 16426), (2434, 8213)]