21147087

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{1609}}^1$

素因数の和:1962

約数の個数: 16

約数和(自身を含む): 30474080

約数和(自身を除く): 9326993

約数列:

[1, 3, 13, 39, 337, 1011, 1609, 4381, 4827, 13143, 20917, 62751, 542233, 1626699, 7049029, 21147087]

約数ペア:

[(1, 21147087), (3, 7049029), (13, 1626699), (39, 542233), (337, 62751), (1011, 20917), (1609, 13143), (4381, 4827)]