20987354

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{3343}}^1$

素因数の和:3461

約数の個数: 16

約数和(自身を含む): 32664192

約数和(自身を除く): 11676838

約数列:

[1, 2, 43, 73, 86, 146, 3139, 3343, 6278, 6686, 143749, 244039, 287498, 488078, 10493677, 20987354]

約数ペア:

[(1, 20987354), (2, 10493677), (43, 488078), (73, 287498), (86, 244039), (146, 143749), (3139, 6686), (3343, 6278)]