11987120

素因数分解:

$2^4\times 5^1\times {\mathrm{149839}}^1$

素因数の和:149852

約数の個数: 20

約数和(自身を含む): 27870240

約数和(自身を除く): 15883120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 149839, 299678, 599356, 749195, 1198712, 1498390, 2397424, 2996780, 5993560, 11987120]

約数ペア:

[(1, 11987120), (2, 5993560), (4, 2996780), (5, 2397424), (8, 1498390), (10, 1198712), (16, 749195), (20, 599356), (40, 299678), (80, 149839)]