21404878

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{4363}}^1$

素因数の和:4599

約数の個数: 16

約数和(自身を含む): 35191296

約数和(自身を除く): 13786418

約数列:

[1, 2, 11, 22, 223, 446, 2453, 4363, 4906, 8726, 47993, 95986, 972949, 1945898, 10702439, 21404878]

約数ペア:

[(1, 21404878), (2, 10702439), (11, 1945898), (22, 972949), (223, 95986), (446, 47993), (2453, 8726), (4363, 4906)]