21256213

素因数分解:

${\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1\times {\mathrm{257}}^1$

素因数の和:444

約数の個数: 16

約数和(自身を含む): 23826816

約数和(自身を除く): 2570603

約数列:

[1, 11, 73, 103, 257, 803, 1133, 2827, 7519, 18761, 26471, 82709, 206371, 291181, 1932383, 21256213]

約数ペア:

[(1, 21256213), (11, 1932383), (73, 291181), (103, 206371), (257, 82709), (803, 26471), (1133, 18761), (2827, 7519)]