21311213

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{4691}}^1$

素因数の和:4768

約数の個数: 16

約数和(自身を含む): 27025920

約数和(自身を除く): 5714707

約数列:

[1, 7, 11, 59, 77, 413, 649, 4543, 4691, 32837, 51601, 276769, 361207, 1937383, 3044459, 21311213]

約数ペア:

[(1, 21311213), (7, 3044459), (11, 1937383), (59, 361207), (77, 276769), (413, 51601), (649, 32837), (4543, 4691)]