21681231

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{50539}}^1$

素因数の和:50566

約数の個数: 16

約数和(自身を含む): 33962880

約数和(自身を除く): 12281649

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 50539, 151617, 555929, 657007, 1667787, 1971021, 7227077, 21681231]

約数ペア:

[(1, 21681231), (3, 7227077), (11, 1971021), (13, 1667787), (33, 657007), (39, 555929), (143, 151617), (429, 50539)]