21158049

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{10867}}^1$

素因数の和:10940

約数の個数: 16

約数和(自身を含む): 31299840

約数和(自身を除く): 10141791

約数列:

[1, 3, 11, 33, 59, 177, 649, 1947, 10867, 32601, 119537, 358611, 641153, 1923459, 7052683, 21158049]

約数ペア:

[(1, 21158049), (3, 7052683), (11, 1923459), (33, 641153), (59, 358611), (177, 119537), (649, 32601), (1947, 10867)]