21898965

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{132721}}^1$

素因数の和:132740

約数の個数: 16

約数和(自身を含む): 38223936

約数和(自身を除く): 16324971

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 132721, 398163, 663605, 1459931, 1990815, 4379793, 7299655, 21898965]

約数ペア:

[(1, 21898965), (3, 7299655), (5, 4379793), (11, 1990815), (15, 1459931), (33, 663605), (55, 398163), (165, 132721)]