12991490

素因数分解:

$2^1\times 5^1\times {\mathrm{727}}^1\times {\mathrm{1787}}^1$

素因数の和:2521

約数の個数: 16

約数和(自身を含む): 23429952

約数和(自身を除く): 10438462

約数列:

[1, 2, 5, 10, 727, 1454, 1787, 3574, 3635, 7270, 8935, 17870, 1299149, 2598298, 6495745, 12991490]

約数ペア:

[(1, 12991490), (2, 6495745), (5, 2598298), (10, 1299149), (727, 17870), (1454, 8935), (1787, 7270), (3574, 3635)]