2179679540

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{999853}}^1$

素因数の和:999971

約数の個数: 24

約数和(自身を含む): 4619325480

約数和(自身を除く): 2439645940

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 999853, 1999706, 3999412, 4999265, 9998530, 19997060, 108983977, 217967954, 435935908, 544919885, 1089839770, 2179679540]

約数ペア:

[(1, 2179679540), (2, 1089839770), (4, 544919885), (5, 435935908), (10, 217967954), (20, 108983977), (109, 19997060), (218, 9998530), (436, 4999265), (545, 3999412), (1090, 1999706), (2180, 999853)]