781319

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:230

約数の個数: 16

約数和(自身を含む): 994560

約数和(自身を除く): 213241

約数列:

[1, 7, 11, 73, 77, 139, 511, 803, 973, 1529, 5621, 10147, 10703, 71029, 111617, 781319]

約数ペア:

[(1, 781319), (7, 111617), (11, 71029), (73, 10703), (77, 10147), (139, 5621), (511, 1529), (803, 973)]