199921516

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{703949}}^1$

素因数の和:704024

約数の個数: 12

約数和(自身を含む): 354790800

約数和(自身を除く): 154869284

約数列:

[1, 2, 4, 71, 142, 284, 703949, 1407898, 2815796, 49980379, 99960758, 199921516]

約数ペア:

[(1, 199921516), (2, 99960758), (4, 49980379), (71, 2815796), (142, 1407898), (284, 703949)]