21151077

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{641}}^1\times {\mathrm{647}}^1$

素因数の和:1308

約数の個数: 16

約数和(自身を含む): 29953152

約数和(自身を除く): 8802075

約数列:

[1, 3, 17, 51, 641, 647, 1923, 1941, 10897, 10999, 32691, 32997, 414727, 1244181, 7050359, 21151077]

約数ペア:

[(1, 21151077), (3, 7050359), (17, 1244181), (51, 414727), (641, 32997), (647, 32691), (1923, 10999), (1941, 10897)]