209941921

素因数分解:

$7^2\times {\mathrm{601}}^1\times {\mathrm{7129}}^1$

素因数の和:7744

約数の個数: 12

約数和(自身を含む): 244658820

約数和(自身を除く): 34716899

約数列:

[1, 7, 49, 601, 4207, 7129, 29449, 49903, 349321, 4284529, 29991703, 209941921]

約数ペア:

[(1, 209941921), (7, 29991703), (49, 4284529), (601, 349321), (4207, 49903), (7129, 29449)]