21157659

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{41243}}^1$

素因数の和:41271

約数の個数: 16

約数和(自身を含む): 32995200

約数和(自身を除く): 11837541

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 41243, 123729, 371187, 783617, 1113561, 2350851, 7052553, 21157659]

約数ペア:

[(1, 21157659), (3, 7052553), (9, 2350851), (19, 1113561), (27, 783617), (57, 371187), (171, 123729), (513, 41243)]